Nantucket County

Nantucket County is located in southeastern Massachusetts, offshore in the Atlantic Ocean, and consists primarily of Nantucket Island along with smaller nearby islands and shoals. It is geographically separated from the mainland and forms part of the Cape and Islands region. Established in the late 17th century and long associated with maritime trade and whaling, the county developed around seafaring industries before shifting toward seasonal tourism and service-based employment. Nantucket County is one of the smallest counties in Massachusetts by population, with roughly 14,000 residents as of the 2020 U.S. Census, though its population fluctuates sharply during peak summer months. The landscape is largely coastal, with beaches, dunes, moors, and low-lying wetlands, and land use is dominated by residential areas, conservation lands, and village centers. The county seat is Nantucket, which is also the county’s sole incorporated municipality.

Nantucket County is an island county located off the southeastern coast of Massachusetts in the Atlantic Ocean. It is coextensive with the Town of Nantucket and is geographically separate from the mainland.

Population Size

According to the U.S. Census Bureau QuickFacts page for Nantucket County, Nantucket County had an estimated population of 14,255 (2023). The same source reports a 2020 Census population of 14,255, reflecting the county’s small, island-based population base.

Age & Gender

According to U.S. Census Bureau QuickFacts (Nantucket County) (2018–2022 ACS 5-year estimates):

• Under 5 years: 4.0%
• Under 18 years: 16.2%
• Age 65+: 18.6%
• Female persons: 49.4%
• Male persons: 50.6% (computed as remainder)

Racial & Ethnic Composition

According to U.S. Census Bureau QuickFacts (Nantucket County) (2018–2022 ACS 5-year estimates), the county’s racial and ethnic composition includes:

• White alone: 83.6%
• Black or African American alone: 2.9%
• American Indian and Alaska Native alone: 0.5%
• Asian alone: 2.4%
• Native Hawaiian and Other Pacific Islander alone: 0.1%
• Two or More Races: 10.6%
• Hispanic or Latino (of any race): 12.3%

Household & Housing Data

According to U.S. Census Bureau QuickFacts (Nantucket County) (2018–2022 ACS 5-year estimates), household and housing indicators include:

• Households: 5,310
• Persons per household: 2.36
• Owner-occupied housing unit rate: 43.7%
• Median value of owner-occupied housing units: $1,647,300
• Median selected monthly owner costs (with a mortgage): $4,005
• Median gross rent: $2,007
• Housing units: 20,810

For local government and planning resources, visit the Town of Nantucket official website (Nantucket County is coextensive with the Town of Nantucket).

Nantucket County is an island community with low population density and no road connections to mainland networks, so digital communication depends on undersea backhaul and locally built last‑mile infrastructure; this can constrain capacity and resilience during outages or peak demand.

Direct county-level email usage statistics are not routinely published, so email adoption is inferred from household internet/computer access and age structure. The U.S. Census Bureau (American Community Survey) provides proxy indicators such as broadband subscription and computer ownership that correlate with routine email access. Age distribution also matters because older populations tend to show lower uptake of digital services; Nantucket’s age profile can be referenced via ACS county demographic tables. Gender distribution is available in the same source and is generally less predictive of email access than age and connectivity, though it can contextualize digital inclusion patterns.

Connectivity limitations are shaped by the island setting and rights‑of‑way constraints; local context on infrastructure and services is available from Nantucket town and county government resources.

Nantucket County is an island county off the southeastern coast of Massachusetts, consisting primarily of the Town of Nantucket. Its insular geography, limited land area, and reliance on submarine fiber backhaul can shape mobile network performance and resiliency. The county’s year-round population is relatively small, with substantial seasonal population swings tied to tourism and second-home occupancy, which can affect congestion patterns and perceived service quality during peak months. Baseline demographic and housing context is available through the U.S. Census Bureau’s Nantucket County profiles on Census.gov.

Key distinctions: network availability vs. household adoption

• Network availability refers to where mobile providers report that service (e.g., 4G LTE or 5G) can be received. In the U.S., these data are primarily reported by carriers to the federal government and compiled into coverage maps.
• Household adoption refers to what residents actually subscribe to and use (e.g., smartphones, mobile broadband plans, or “cellular data only” home internet). Adoption is typically measured via surveys such as the American Community Survey (ACS) or other official survey programs.

County-specific mobile adoption statistics are more limited than state-level totals; Nantucket County is often included within broader state estimates in publicly released survey products.

Mobile access and penetration indicators (adoption)

Household phone and internet subscription indicators

• ACS “Computer and Internet Use” tables provide indicators such as household internet subscription types, including cellular data plans used as a source of internet access. These tables can be accessed via data.census.gov and filtered to Nantucket County, Massachusetts, where available for the selected year and geography.
• For “mobile-only” reliance, the most relevant ACS category is typically cellular data plan (often reported alongside other subscription types). This indicates that a household reports having a cellular data plan for internet access, but it does not measure network quality or coverage.

Limitations at county level

• Smartphone ownership and detailed mobile penetration (e.g., share of adults with a smartphone) is commonly measured by private surveys or national-level public surveys. County-level smartphone ownership is not consistently available as an official statistic for Nantucket County in public releases.
• ACS does not directly measure smartphone vs. basic phone ownership. It focuses on internet subscription types and device categories like “smartphone” only in limited ways depending on survey instrument versions; most consistently, it reports computer type and internet subscription type rather than phone model type.

Mobile internet usage patterns and network availability (4G/5G)

Reported 4G LTE and 5G availability

• The most widely used public source for reported mobile broadband coverage is the FCC National Broadband Map. It provides provider-reported coverage by technology (including 4G LTE and multiple categories of 5G) and allows viewing coverage in and around Nantucket County.
• Massachusetts broadband planning and mapping context is also available through the Massachusetts Broadband Institute (MBI), which focuses heavily on fixed broadband but also provides statewide context that can be relevant to island communities.

Interpretation notes (availability vs. experienced performance)

• FCC map availability reflects carrier-reported coverage polygons and does not by itself quantify real-world throughput, indoor reception, congestion, or seasonal performance.
• Peak-season visitor surges can increase cell loading in small geographies, affecting speeds and latency even where coverage exists. This is a usage/congestion dynamic rather than a change in the underlying availability footprint.

Common device types (smartphones vs. other devices)

What is known from public datasets

• At the county level, official public datasets generally support inference about internet subscription types (including cellular data plans) more readily than device type ownership (smartphone vs. feature phone).
• ACS tables can indicate whether households use the internet and what type of subscription they report (including cellular data plans), but they do not provide a standard county statistic for smartphone share.

Practical device mix (evidence limitations)

• Smartphones are the dominant mobile access device nationally, but a definitive Nantucket County smartphone-to-non-smartphone breakdown is not available as a standard county-level public statistic in the primary federal datasets. Any precise county device-type percentages require non-government survey releases or proprietary market research not uniformly published for the county.

Demographic and geographic factors influencing mobile usage and connectivity

Island geography and infrastructure constraints

• Nantucket’s separation from the mainland concentrates backhaul dependencies into limited submarine and terrestrial routes, which can influence redundancy and restoration timelines after outages.
• The built environment includes a dense historic town core and lower-density residential areas; building materials and indoor layouts can affect indoor signal penetration, while lower-density areas can have fewer nearby cell sites.

Seasonal population and network load

• The county’s large seasonal influx can shift mobile usage from steady residential demand to high peak concurrent usage, influencing perceived service during summer months even where coverage is reported as available.

Housing characteristics and substitution dynamics (adoption-side)

• Areas with higher shares of seasonal or part-time occupancy can show different patterns in household internet subscription reporting. ACS housing occupancy and population estimates for the county on data.census.gov provide context for interpreting adoption measures, but they do not directly attribute causality to mobile vs. fixed substitution.

Where to find county-relevant primary sources

• Coverage / availability: FCC National Broadband Map (technology and provider-reported mobile broadband coverage).
• Household adoption indicators: U.S. Census Bureau data portal (ACS tables on internet subscriptions, including cellular data plans).
• Local context: the Town of Nantucket website for planning, emergency management, and infrastructure context that can affect service continuity and public communications.

Summary of what can and cannot be stated confidently

• Can be stated with public, county-relevant sources: reported mobile network availability patterns (4G/5G) using FCC mapping; household internet subscription indicators that include cellular data plans using ACS tables.
• Not consistently available as official county-level public statistics: smartphone ownership rates, feature-phone prevalence, and detailed mobile penetration metrics comparable to national smartphone surveys; precise countywide mobile-only reliance rates outside ACS “cellular data plan” reporting categories; measured mobile performance by season without third-party measurement datasets.

Nantucket County is a small, island county off the coast of Massachusetts, centered on the Town of Nantucket and shaped by a seasonal tourism economy, second‑home ownership, and a well-known maritime and historic district culture. These characteristics tend to increase reliance on mobile connectivity, visual storytelling, and event/visitor information sharing compared with many inland counties.

User statistics (penetration and active use)

• County-specific social media penetration is not published in major public datasets at the county level (most national surveys report state or national estimates rather than Nantucket County directly).
• For context, Massachusetts has high broadband and smartphone availability, and social media use in the county is generally expected to track high‑access New England patterns rather than low‑connectivity rural regions.
• Nationally, social media use among U.S. adults is widespread (used here as the most reliable benchmark for local context):
  • ≈69% of U.S. adults use social media (Pew Research Center). See Pew Research Center: Social Media Fact Sheet.

Age group trends (who uses social media most)

Using Pew’s U.S. adult benchmarks (commonly used for local contextualization when county-level splits are unavailable):

• 18–29: highest usage (consistently the most active cohort across platforms).
• 30–49: high usage, typically second-highest.
• 50–64: moderate but substantial usage.
• 65+: lower usage than younger groups but has grown steadily over time.
  Source: Pew Research Center social media use by age.

Local context note: Nantucket’s large seasonal workforce and visitor population increases the share of activity driven by younger adults during peak months, especially on mobile-first, visual platforms (Instagram, TikTok, Snapchat) and on review/maps ecosystems (often adjacent to social behavior).

Gender breakdown

Reliable county-level gender splits are not publicly standardized across platforms. National benchmarks provide the most comparable measure:

• Pew reports gender differences vary by platform (e.g., women tend to be more represented on Pinterest; gender gaps are smaller on several large platforms).
  Source: Pew Research Center platform-by-platform demographics.

Most-used platforms (percentages where available)

Pew’s U.S. adult estimates (platform use among adults) are widely cited and methodologically consistent:

• Commonly among the most-used platforms nationally include YouTube, Facebook, Instagram, with TikTok and Snapchat especially strong among younger adults.
  For current, platform-level percentages and demographic splits, see Pew Research Center: Social Media Fact Sheet.

Local interpretation for Nantucket County (platform mix):

• Instagram tends to be disproportionately important in tourism-oriented locales due to visual content, local discovery, and creator/visitor sharing.
• Facebook remains central for year-round residents and local groups (community updates, civic information, events).
• YouTube is commonly used across ages for information and entertainment, including travel planning and how-to content.

Behavioral trends (engagement patterns and preferences)

• Seasonality-driven engagement: Activity generally rises during spring–summer tourism months, with increased posting around beaches, dining, events, and local attractions; winter engagement skews toward community information and local updates.
• High value of visual and location-based content: Island scenery and cultural events support higher interaction with photos, short video, and geotagged posts compared with text-only formats.
• Discovery and planning behavior: Social platforms and adjacent ecosystems (maps, reviews, short-form video search behavior) play a stronger role in trip planning and “what to do” discovery, amplifying the reach of local businesses and event organizers.
• Community utility use cases: Facebook Groups and local pages tend to be used for practical coordination (community notices, local services, housing/seasonal jobs), reflecting the county’s constrained housing market and seasonal labor dynamics.
• Mobile-first consumption: Travel contexts correlate with heavier mobile usage and short-form video consumption; Pew documents broader national growth in smartphone-based social use. See Pew Research Center: Mobile Fact Sheet for device context relevant to social behavior.

Nantucket County, Massachusetts maintains vital (family) records primarily through the Town of Nantucket’s Clerk/Registrar of Vital Records, rather than a separate county registry. Records commonly maintained include births, deaths, marriages, and related certified extracts; Massachusetts also records divorces through the state vital records system. Adoption records are not maintained as open public files; access is restricted under state law and handled through state processes.

Public access is provided through a mix of in-person service and statewide online indexes. Residents may request certified copies and conduct local searches through the Town of Nantucket — Town Clerk (Registrar of Vital Records). Statewide indexes and certified-copy ordering are available through the Massachusetts Registry of Vital Records and Statistics (RVRS). Older vital records are also searchable via the state’s archival index, including images for many early records, through the Massachusetts Archives — Virtual Repository (Vital Records).

Privacy and restrictions vary by record type and age. Recent birth records generally have stricter access controls than death records, and certified copies require identity/eligibility verification. Adoption and sealed amendments are not available through routine public-record requests. Fees, identification requirements, and processing times are set by the issuing office and Massachusetts statutes and regulations.

Record types maintained

• Marriage intention (license application) and marriage record/certificate
  • Massachusetts requires couples to file a Notice of Intention of Marriage with a city or town clerk; after the statutory waiting period, the marriage may be solemnized and a return is filed, producing the official marriage record.
• Divorce records
  • Divorce cases are maintained as court case files and, once finalized, include a Judgment of Divorce Nisi/Absolute (terminology varies by era and form) and related docket entries and orders.
• Annulment records
  • Annulments are handled by the courts as domestic relations actions; records typically include a judgment or decree of nullity and associated filings.

Where records are filed and access points

Marriage records (vital records)

• Local filing and custody
  • Marriage intentions and marriage records are filed with the city/town clerk where the intention is filed and/or where the marriage is recorded, consistent with Massachusetts vital records practice.
• State copy
  • Massachusetts maintains centralized vital records through the Registry of Vital Records and Statistics (RVRS), which holds state copies of marriage records.
• Access
  • Certified copies are typically issued by the Nantucket Town Clerk (local record) and by RVRS (state record).
  • Historical marriage records (older vital records) are commonly available through state archives and library-based microfilm/print collections. A principal statewide reference source is the Massachusetts Archives collection of vital records through 1849 (published series).

Divorce and annulment records (court records)

• Court filing and custody
  • Divorce and annulment actions are filed and maintained in the Massachusetts Probate and Family Court; Nantucket County matters are maintained by the Probate and Family Court serving Nantucket County (court location and administrative details are provided by the Massachusetts Court System).
• Access
  • Case information (such as docket listings) may be available through the Massachusetts Trial Court’s public access services where offered; complete files and certified copies are obtained through the court clerk’s office, subject to statutory confidentiality and court rules.
• References
  • Massachusetts Court System (Probate and Family Court): https://www.mass.gov/orgs/probate-and-family-court
  • RVRS (state vital records): https://www.mass.gov/orgs/registry-of-vital-records-and-statistics

Typical information included

Marriage intentions, licenses, and certificates

• Identifying details
  • Full names of the parties; date and place of birth; current residence; age (or date of birth); occupation; marital status (single/divorced/widowed); number of previous marriages.
• Parent/guardian information
  • Names of parents (often including mother’s maiden name), sometimes parents’ birthplaces.
• Event details
  • Date and place of intended marriage; date and place of marriage; officiant name/title; location of ceremony; clerk filing details and registration identifiers.
• Administrative notations
  • Filing date, issuance/validity information, and any amendments/corrections recorded by the clerk.

Divorce records (court files)

• Case information
  • Names of plaintiff/defendant (or petitioner/respondent); docket number; filing date; hearing dates; grounds alleged (in older records) and procedural history.
• Judgment terms
  • Date of judgment; dissolution terms; custody and parenting orders; child support; alimony; division of property; name-change orders when granted; restraining/protective orders when applicable.
• Supporting documents
  • Complaints/petitions, summons/returns of service, financial statements, affidavits, agreements, findings, and orders; exhibits may appear in contested matters.

Annulment records (court files)

• Case information
  • Parties’ names, docket number, filing date, and procedural history.
• Judgment content
  • Decree/judgment of nullity and associated findings; related orders addressing custody, support, and property issues when applicable under Massachusetts law.

Privacy and legal restrictions

Marriage records

• Public status
  • Massachusetts marriage records are generally treated as public vital records, and certified copies are commonly available through clerks and RVRS.
• Limits on certified copies
  • Massachusetts distinguishes between informational copies and certified copies for some vital records; issuance practices may vary by record type and era, and identification/payment requirements apply.
• Recent-record handling
  • Recent vital records are administered under state vital records regulations and fee schedules; clerks and RVRS follow statutory and regulatory rules for access and certification.

Divorce and annulment court records

• Public access with confidentiality exceptions
  • Many docket entries and orders are public, but Probate and Family Court records commonly include impounded, sealed, or otherwise confidential components.
• Typical restricted materials
  • Financial statements, certain affidavits, addresses, minor-related materials, abuse prevention or protective-order-related information, and other sensitive documents may be restricted by statute, court rule, or judicial order.
• Certified copies
  • Certified copies of judgments/decrees are issued by the court clerk, with access limited where files or specific documents are sealed/impounded.

Practical distinctions in recordkeeping

• Marriage is recorded as a vital record (town clerk and state vital records repository).
• Divorce and annulment are recorded as court actions (Probate and Family Court case files), with public access moderated by sealing/impoundment rules and confidentiality provisions.

Nantucket County is an island county off the coast of Cape Cod in Massachusetts, coextensive with the Town of Nantucket. It has a small year‑round population that expands substantially during the summer tourism season, shaping its public services, labor market seasonality, and housing costs. The county’s settlement pattern is anchored by Nantucket Town and the mid‑island area, with outlying coastal and rural sections characterized by lower density and conservation land.

Education Indicators

Public schools (count and names)

Nantucket’s public education is provided by Nantucket Public Schools (NPS). Public school campuses commonly listed for NPS include:

• Nantucket Elementary School
• Cyrus Peirce Middle School
• Nantucket High School

(Operational listings and program sites are maintained by NPS and the Massachusetts Department of Elementary and Secondary Education; see the Nantucket Public Schools site and Massachusetts DESE district/school profiles.)

Student–teacher ratios and graduation outcomes

• Student–teacher ratio: Nantucket public schools generally report ratios near typical Massachusetts public-school levels; the most current official ratios by school and district are published in DESE Profiles.
• Graduation rate: Nantucket High School’s 4‑year graduation rate is reported annually by DESE under cohort outcomes in DESE Profiles (most recent year available varies by release cycle).

Note on availability: A single, countywide student–teacher ratio and a single graduation-rate figure are not consistently published in one county summary table because Nantucket County is served primarily by one district; the authoritative, most recent values are the district/school-level DESE releases.

Adult educational attainment (age 25+)

Adult attainment in Nantucket County is high relative to many U.S. counties, with a substantial share holding bachelor’s degrees and above. The most recent American Community Survey (ACS) 5‑year estimates provide:

• High school diploma (or higher) share
• Bachelor’s degree (or higher) share

These measures are published for Nantucket County via the U.S. Census Bureau’s data.census.gov (ACS).

Notable programs (STEM, vocational, AP)

• Advanced Placement (AP): Nantucket High School participates in AP offerings; participation and performance are commonly reflected in school course catalogs and state reporting.
• Career and technical / vocational preparation: Nantucket’s island setting limits access to large regional vocational-technical high schools, so career pathways and work-based learning are typically organized through the district and local partners rather than a standalone county vocational campus. Program specifics are maintained by NPS and DESE reporting.
• STEM: STEM coursework is typically integrated through middle and high school science/math sequences and electives; program descriptions and course availability are maintained by NPS.

Note on availability: Public, county-specific inventories of every STEM/vocational pathway and the full AP catalog are not consistently consolidated in a single statewide dataset; the most definitive current listings are NPS course/program publications and DESE school profiles.

School safety measures and counseling resources

• Safety measures: Massachusetts public schools generally operate under required safety planning frameworks (emergency operations planning, drills, visitor controls, and coordination with local public safety). District-specific safety practices are typically summarized in NPS handbooks and school committee materials.
• Counseling/resources: NPS schools commonly provide school counseling services; student support structures in Massachusetts districts frequently include counseling, adjustment counseling, and referrals to community providers, with staffing and service descriptions maintained in district publications and school profiles.

Employment and Economic Conditions

Unemployment rate (most recent)

Nantucket’s unemployment is highly seasonal (tourism-driven), with the most recent annual and monthly unemployment rates reported by:

• Massachusetts Executive Office of Labor and Workforce Development (LMI) and
• the U.S. Bureau of Labor Statistics Local Area Unemployment Statistics (LAUS).

Note on interpretation: Annual averages can mask pronounced summer/winter swings; monthly series are commonly used to represent the seasonal pattern.

Major industries and employment sectors

The dominant sectors reflect the visitor economy and local services necessary to support an island community:

• Accommodation and food services (hotels, inns, restaurants)
• Retail trade
• Arts, entertainment, recreation (including visitor-facing services)
• Construction (driven by renovation and high-end residential building)
• Real estate and rental/leasing and professional services related to property management and seasonal operations
• Health care and social assistance
• Local government and public education

Industry distributions and employment counts are available through state LMI and Census employment datasets (including commuting and workplace characteristics), including LEHD OnTheMap for worker/resident flows.

Common occupations and workforce characteristics

Common occupational groupings generally align with the county’s service and construction economy:

• Food preparation and serving
• Building and grounds cleaning and maintenance
• Sales and related occupations
• Construction and extraction trades
• Transportation and material moving (including ferry/airport-adjacent services)
• Office and administrative support
• Management and professional roles tied to hospitality operations, real estate, and small business management

Occupational estimates are typically drawn from ACS (resident occupation) via data.census.gov; employer-based occupational staffing patterns are more limited at the county level for small geographies.

Commuting patterns and mean commute time

• Mode: Island geography results in a high share of commuting within the island by car, bicycle, walking, and local transit, with some seasonal workers commuting from off-island locations via ferry/air.
• Mean travel time to work: Reported in the ACS “commute time” tables for Nantucket County (most recent 5‑year estimate) via data.census.gov. Nantucket’s mean commute time is typically lower than large metro counties due to short internal distances, though congestion can be significant in peak season.

Local employment vs. out-of-county work

Because Nantucket County is geographically isolated, most resident workers are employed on-island, and off-island commuting is constrained by ferry/air schedules and cost. The most direct measurement of:

• residents working in-county vs. out-of-county, and
• in-county jobs filled by in-county residents vs. in-commuters
  is available through LEHD OnTheMap origin–destination statistics.

Housing and Real Estate

Homeownership vs. renting

Nantucket has a high share of seasonal/second homes and a constrained year-round rental market, with tenure (owner vs. renter occupancy) and vacancy/seasonal occupancy captured in ACS housing tables via data.census.gov. Owner-occupancy among year-round households is often substantial, while the overall housing stock includes a large seasonal component.

Median property values and recent trends

• Home values: Nantucket consistently ranks among the highest-priced housing markets in Massachusetts and the U.S., with median values far above state averages.
• Trend: Recent years have been characterized by elevated prices and limited inventory, with volatility tied to broader interest-rate cycles and luxury/second-home demand.

The most recent median owner-occupied housing value for Nantucket County is available from ACS (5‑year) via data.census.gov. For market-trend descriptions (sales volume, median sale price), town- and county-level transaction summaries are commonly compiled by local assessors and Massachusetts housing market reporting; Nantucket’s assessed values are published through the Town.

Typical rent prices

Asking rents vary widely by season, unit type, and whether housing is available year-round. The most consistent public benchmark is:

• Median gross rent (ACS 5‑year) for Nantucket County via data.census.gov.

Proxy note: Private listing rents can exceed ACS medians substantially during peak season; ACS reflects occupied units and is better interpreted as a year-round affordability indicator.

Housing types and built form

• Single-family detached homes dominate much of the owner-occupied stock, including historic homes in Nantucket Town and larger homes in outlying coastal areas.
• Apartments and multi-unit buildings exist primarily in and near Nantucket Town and mid-island areas, often limited in scale.
• Accessory dwelling units and conversions are present but constrained by local zoning and infrastructure considerations.
• Rural lots/conservation adjacency is common outside the core, with significant protected open space shaping development patterns.

Neighborhood characteristics (proximity to schools/amenities)

• Nantucket Town: Highest concentration of civic amenities (schools, municipal services, library, retail, medical), more walkable street networks, and limited off-street parking in historic areas.
• Mid-island: More auto-oriented, with proximity to many year-round services, larger parcels, and connections to main road corridors.
• Outlying/coastal areas (e.g., Surfside/Madaket/Siasconset vicinity): Lower density, longer travel times to schools and year-round services, and higher prevalence of seasonal occupancy.

Property tax overview (rate and typical homeowner cost)

Property taxes are administered by the Town of Nantucket (county and town are coextensive for many functions). Key public measures include:

• Tax rate (per $1,000 of assessed value) set annually.
• Typical tax bill derived from assessed values and the adopted rate, with effects from residential exemptions and classification policies where applicable.

The most authoritative current figures (tax rate, average/median tax bill proxies, assessed values) are published by the Town’s assessor and finance offices; see the Town of Nantucket official site for annual tax rate and assessment documentation.

Availability note: “Average homeowner cost” varies sharply due to the distribution of assessed values; town-issued annual reports and assessor summaries are the definitive local sources for representative tax-bill metrics.