21,061 people (2024 Census estimate, +2.3% since 2020)
103 square miles of land · 204 people per square mile
“Highest” and “lowest” are just order, not grades: a high rank for poverty or hazard losses means more of it. Each figure's source is in its section below.
7 active community water systems list Dukes County in the area they serve, reporting 39,491 people served in all (a system that crosses county lines counts its whole population).
| OAK BLUFFS WATER DISTRICT groundwater · local government · MA4221000 | 24,000 served |
| EDGARTOWN WATER DEPARTMENT groundwater · local government · MA4089000 | 8,027 served |
| TISBURY WATER WORKS groundwater · local government · MA4296000 | 6,082 served |
| MENEMSHA WATER COMPANY groundwater · private · MA4062000 | 841 served |
| GOSNOLD WATER DEPT groundwater · local government · MA4109000 | 425 served |
| KUEHNS WAY LLC groundwater · private · MA4296018 | 80 served |
| SCOTTS GROVE LLC groundwater · public/private · MA4296017 | 36 served |
Source: U.S. EPA Safe Drinking Water Information System (SDWIS), active community systems, . Look up any system's violations and test results with EPA's search using its ID.
About 15 people were held in Dukes County's jail, in Vera's latest figure (2025). In 2020 it was about 8.
Source: Vera Institute of Justice, Incarceration Trends (built from federal Bureau of Justice Statistics jail surveys). Counties without their own jail, or that share one, may show no figure.
5 school districts have their office in Dukes County. School taxes are usually the largest part of a property tax bill.
Spent $31.9 million — $31.1 million to run schools, about $40,466 per student, plus $112,000 on buildings and equipment. Money in: $22.7 million local (mostly property tax), $9.1 million state, $3.8 million federal.
Spent $14.9 million — $14.5 million to run schools, about $32,952 per student, plus $315,000 on buildings and equipment. Money in: $4.9 million local (mostly property tax), $2.5 million state, $345,000 federal. Long-term debt: $6,000.
Spent $16.7 million — $16.5 million to run schools, about $40,034 per student, plus $81,000 on buildings and equipment. Money in: $14.1 million local (mostly property tax), $2.7 million state, $380,000 federal.
Spent $15.3 million — $14.8 million to run schools, about $36,745 per student, plus $53,000 on buildings and equipment. Money in: $4.8 million local (mostly property tax), $3.5 million state, $241,000 federal. Long-term debt: $6.9 million.
Spent $36.3 million — $12.8 million to run schools, about $47,132 per student, plus $22 million on buildings and equipment. Money in: $4.8 million local (mostly property tax), $2.3 million state, $143,000 federal. Long-term debt: $60,000.
Source: U.S. Census Bureau, 2023 Annual Survey of School System Finances. Districts are listed by the county of their main office; some serve neighboring counties too.
Source: County Health Rankings & Roadmaps 2025 (University of Wisconsin Population Health Institute), which gathers federal data (CDC, Census, and others); measures cover different recent years. Blank lines aren't reported for small counties.
Overall risk: Very Low compared with other U.S. counties. FEMA estimates natural hazards cost Dukes County about $7.3 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very High; social vulnerability: Relatively Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
5 bridges in Dukes County: 4 in good condition, 1 fair, and 0 poor (0.0%). “Poor” means a main part — the deck, the beams, or the supports — is rated 4 or lower on the federal 0–9 scale. It doesn't mean unsafe to drive; unsafe bridges are closed.
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $33.7 million of work in Dukes County in fiscal 2025, about $1,635 per resident — to the county, cities, schools, hospitals, nonprofits and others.
Source: USAspending.gov, grants by place of performance, fiscal 2025 (Oct. 2024 to Sept. 2025). Search it by county to see each award.
From Grants.gov: posted grants listing county governments as eligible, soonest deadline first; research-only and overseas programs left out; list updated 2026-10-13, refreshed weekly. 62 are open in all. Cities, towns, school districts and nonprofits have their own lists there.
State election: Tuesday, November 3, 2026. Early voting: 2026-10-17 to 2026-10-30. Last day to register to vote: 2026-10-24. Mail ballot request deadline: 2026-10-27. Election Day: 2026-11-03. Last day for mailed ballots to arrive: 2026-11-06.
Source: Secretary of the Commonwealth, 2026 Information for Voters, p. 4 · Cambridge Election Commission, 2026 State Election guide (return deadlines) · Mass. General Laws ch. 54, sec. 93
The budget, property tax rates, audits, local officials and offices for Dukes County come from the county's own records, which we haven't gathered — not gathered, never hidden. See what a full county site looks like, or ask to have Dukes County built: brayden.ozark@gmail.com.
More of Massachusetts: the state government and every county in Massachusetts.
Nearby counties: Newport County, RI (31 mi) · Nantucket County (32 mi) · Bristol County (32 mi) · Barnstable County (36 mi) · Bristol County, RI (38 mi) · Plymouth County (42 mi).