131,708 people (2024 Census estimate, +2.3% since 2020)
428 square miles of land · 308 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.
26 active community water systems list Hunterdon County in the area they serve, reporting 256,466 people served in all (a system that crosses county lines counts its whole population).
| NJ AMERICAN WATER - SHORT HILLS surface water · private · NJ0712001 | 217,230 served |
| CLINTON WATER DEPT groundwater · local government · NJ1005001 | 12,500 served |
| FLEMINGTON WATER DEPARTMENT groundwater · local government · NJ1009001 | 4,581 served |
| VEOLIA WATER NEW JERSEY LAMBERTVILLE surface water · private · NJ1017001 | 3,960 served |
| WASHINGTON TWP MUA-HAGER groundwater · local government · NJ1438003 | 3,458 served |
| HIGH BRIDGE W DEPT groundwater · local government · NJ1014001 | 3,300 served |
| GLEN GARDNER W DEPT groundwater · local government · NJ1012001 | 1,705 served |
| MILFORD W DEPT groundwater · local government · NJ1020001 | 1,453 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 35 people were held in Hunterdon County's jail, in Vera's latest figure (2021), or 42 per 100,000 residents ages 15–64. In 2015 it was about 85.
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.
26 school districts have their office in Hunterdon County. School taxes are usually the largest part of a property tax bill.
Spent $87.9 million — $80.1 million to run schools, about $25,448 per student, plus $619,000 on buildings and equipment. Money in: $63.6 million local (mostly property tax), $22.8 million state, $2.6 million federal. Long-term debt: $56.8 million.
Spent $87.2 million — $79.6 million to run schools, about $31,736 per student, plus $4.8 million on buildings and equipment. Money in: $67.5 million local (mostly property tax), $18.4 million state, $1.9 million federal.
Spent $72.9 million — $65.4 million to run schools, about $33,813 per student, plus $2.3 million on buildings and equipment. Money in: $56.1 million local (mostly property tax), $16.9 million state, $1 million federal. Long-term debt: $7 million.
Spent $44.1 million — $41.7 million to run schools, about $29,136 per student, plus $1.8 million on buildings and equipment. Money in: $34.6 million local (mostly property tax), $10.7 million state, $1.3 million federal. Long-term debt: $9.2 million.
Spent $39 million — $35 million to run schools, about $29,923 per student, plus $1.5 million on buildings and equipment. Money in: $29 million local (mostly property tax), $9.9 million state, $1.2 million federal. Long-term debt: $21 million.
Spent $33.1 million — $29.6 million to run schools, about $35,817 per student, plus $2.8 million on buildings and equipment. Money in: $21.8 million local (mostly property tax), $9.2 million state, $1.5 million federal. Long-term debt: $5.9 million.
Spent $28 million — $24.4 million to run schools, about $33,505 per student, plus $1.7 million on buildings and equipment. Money in: $22.4 million local (mostly property tax), $6.2 million state, $874,000 federal.
Spent $19 million — $16.3 million to run schools, about $28,190 per student, plus $2.1 million on buildings and equipment. Money in: $12.1 million local (mostly property tax), $5 million state, $503,000 federal.
And 18 more.
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: Relatively Low compared with other U.S. counties. FEMA estimates natural hazards cost Hunterdon County about $68.5 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very High; social vulnerability: Very Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
373 bridges in Hunterdon County: 75 in good condition, 272 fair, and 26 poor (7.0%). “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.
| I-78 over BEAVER BROOK · built 1941 | 130,244 vehicles a day |
| US 22 over NJT RARITAN VALLEY LINE · built 1937 | 20,839 vehicles a day |
| BRIDGE STREET over D&R FEEDER CANAL · built 1920 | 11,856 vehicles a day |
| COUNTY ROUTE 619 over HARIHOKAKE CREEK · built 1938 | 6,382 vehicles a day |
| MECHLIN CORNER RD over Norf. So. Lehigh Val ML · built 1968 | 5,247 vehicles a day |
| BRIDGE STREET over D&R FEEDER CANAL · built 1926 | 4,821 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $26.3 million of work in Hunterdon County in fiscal 2025, about $204 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.
Registration deadlines, early voting and polling places for New Jersey are on the federal site vote.gov, which links to the state's official election office.
The budget, property tax rates, audits, local officials and offices for Hunterdon 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 Hunterdon County built: brayden.ozark@gmail.com.
More of New Jersey: the state government and every county in New Jersey.
Nearby counties: Somerset County (15 mi) · Bucks County, PA (19 mi) · Warren County (21 mi) · Mercer County (22 mi) · Northampton County, PA (24 mi) · Middlesex County (28 mi).