647,520 people (2024 Census estimate, +0.7% since 2020)
468 square miles of land · 1,383 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.
39 active community water systems list Monmouth County in the area they serve, reporting 658,627 people served in all (a system that crosses county lines counts its whole population).
| NJ AMERICAN WATER - COASTAL NORTH surface water · private · NJ1345001 | 377,613 served |
| GORDONS CORNER WATER CO buys surface water · private · NJ1326001 | 46,196 served |
| FREEHOLD TWP WATER DEPT buys surface water · local government · NJ1316001 | 29,831 served |
| MARLBORO TOWNSHIP WATER UTILITY DIVISION buys surface water · local government · NJ1328002 | 29,480 served |
| WALL TWP WATER DEPT buys surface water · local government · NJ1352003 | 26,000 served |
| BELMAR WATER DEPT buys surface water · local government · NJ1306001 | 20,000 served |
| MANASQUAN WATER DEPARTME groundwater · local government · NJ1327001 | 14,000 served |
| RED BANK WATER DEPT buys surface water · local government · NJ1340001 | 12,520 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 463 people were held in Monmouth County's jail, in Vera's latest figure (2023), or 113 per 100,000 residents ages 15–64. In 2018 it was about 567.
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.
51 school districts have their office in Monmouth County. School taxes are usually the largest part of a property tax bill.
Spent $255.6 million — $230.4 million to run schools, about $22,044 per student, plus $11.8 million on buildings and equipment. Money in: $153.2 million local (mostly property tax), $77.3 million state, $9.7 million federal. Long-term debt: $14.5 million.
Spent $233.4 million — $224.5 million to run schools, about $24,959 per student, plus $2.8 million on buildings and equipment. Money in: $163.9 million local (mostly property tax), $63.3 million state, $10.6 million federal. Long-term debt: $37.1 million.
Spent $153.8 million — $148.9 million to run schools, about $27,095 per student, plus $2.1 million on buildings and equipment. Money in: $53.5 million local (mostly property tax), $88.9 million state, $15.5 million federal. Long-term debt: $11.8 million.
Spent $143.8 million — $139.9 million to run schools, about $25,482 per student, plus $2.5 million on buildings and equipment. Money in: $88.1 million local (mostly property tax), $53.9 million state, $4.1 million federal. Long-term debt: $16.2 million.
Spent $109.3 million — $105.2 million to run schools, about $22,312 per student, plus $1.9 million on buildings and equipment. Money in: $75.3 million local (mostly property tax), $32.1 million state, $3.7 million federal. Long-term debt: $22.3 million.
Spent $120.6 million — $113 million to run schools, about $24,917 per student, plus $6.5 million on buildings and equipment. Money in: $83.1 million local (mostly property tax), $32.6 million state, $3.2 million federal.
Spent $108.8 million — $103 million to run schools, about $26,079 per student, plus $3 million on buildings and equipment. Money in: $64.9 million local (mostly property tax), $38.3 million state, $4.8 million federal. Long-term debt: $26.5 million.
Spent $109.2 million — $106.9 million to run schools, about $30,431 per student, plus $1.3 million on buildings and equipment. Money in: $54.5 million local (mostly property tax), $44.8 million state, $9.3 million federal.
And 43 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 High compared with other U.S. counties. FEMA estimates natural hazards cost Monmouth County about $281.6 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.
508 bridges in Monmouth County: 171 in good condition, 294 fair, and 43 poor (8.5%). “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.
| OLD ROAD (NJ 33) over MILLSTONE RIVER · built 1915 | 34,650 vehicles a day |
| NJ 33 over MANALAPAN BROOK · built 1927 | 30,910 vehicles a day |
| NJ 35 over EDGAR FELIX BIKE PATH · built 1932 | 25,211 vehicles a day |
| NJ 35 over N BRANCH WRECK POND · built 1931 | 24,634 vehicles a day |
| NJ 35 over NJ 71 (UNION AVE) · built 1950 | 24,280 vehicles a day |
| ROUTE 36 over TROUTMANS CREEK · built 1941 | 24,061 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $182.1 million of work in Monmouth County in fiscal 2025, about $283 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 Monmouth 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 Monmouth County built: brayden.ozark@gmail.com.
More of New Jersey: the state government and every county in New Jersey.
Nearby counties: Middlesex County (17 mi) · Richmond County, NY (19 mi) · Kings County, NY (26 mi) · Union County (27 mi) · Mercer County (29 mi) · Ocean County (30 mi).