156,045 people (2024 Census estimate, +0.7% since 2020)
549 square miles of land · 284 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.
10 active community water systems list Monroe County in the area they serve, reporting 129,312 people served in all (a system that crosses county lines counts its whole population).
| MONROE surface water · local government · MI0004450 | 49,467 served |
| MONROE SOUTH COUNTY buys surface water · local government · MI0004455 | 33,816 served |
| FRENCHTOWN TOWNSHIP surface water · local government · MI0002500 | 21,609 served |
| BERLIN TOWNSHIP buys surface water · local government · MI0000635 | 9,900 served |
| ASH TOWNSHIP buys surface water · local government · MI0000245 | 5,959 served |
| DUNDEE buys surface water · local government · MI0001880 | 5,400 served |
| SOUTH ROCKWOOD buys surface water · local government · MI0006130 | 1,587 served |
| PETERSBURG buys surface water · local government · MI0005290 | 1,115 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 246 people were held in Monroe County's jail, in Vera's latest figure (2023), or 252 per 100,000 residents ages 15–64. In 2018 it was about 356.
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.
10 school districts have their office in Monroe County. School taxes are usually the largest part of a property tax bill.
Spent $96 million — $69.3 million to run schools, about $15,024 per student, plus $22.4 million on buildings and equipment. Money in: $24.6 million local (mostly property tax), $46.3 million state, $13.5 million federal. Long-term debt: $44.4 million.
Spent $58.1 million — $52.1 million to run schools, about $13,102 per student, plus $4.5 million on buildings and equipment. Money in: $14.9 million local (mostly property tax), $44.4 million state, $2.8 million federal. Long-term debt: $33.4 million.
Spent $43.3 million — $36.9 million to run schools, about $13,138 per student, plus $4.6 million on buildings and equipment. Money in: $10.8 million local (mostly property tax), $30.9 million state, $5 million federal. Long-term debt: $22.9 million.
Spent $36.3 million — $31.1 million to run schools, about $16,234 per student, plus $445,000 on buildings and equipment. Money in: $16.1 million local (mostly property tax), $21.1 million state, $3.4 million federal. Long-term debt: $86.7 million.
Spent $33.8 million — $24.5 million to run schools, about $13,667 per student, plus $7.6 million on buildings and equipment. Money in: $8.9 million local (mostly property tax), $17.8 million state, $2.3 million federal. Long-term debt: $19.4 million.
Spent $19.5 million — $18.1 million to run schools, about $12,583 per student, plus $1.1 million on buildings and equipment. Money in: $3.1 million local (mostly property tax), $16.1 million state, $1.4 million federal.
Spent $21.6 million — $18.8 million to run schools, about $13,859 per student, plus $1.5 million on buildings and equipment. Money in: $8.8 million local (mostly property tax), $11.9 million state, $1.9 million federal. Long-term debt: $14,000.
Spent $14.5 million — $13.6 million to run schools, about $13,203 per student, plus $640,000 on buildings and equipment. Money in: $3 million local (mostly property tax), $11.1 million state, $984,000 federal. Long-term debt: $534,000.
And 2 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 Moderate compared with other U.S. counties. FEMA estimates natural hazards cost Monroe County about $54.7 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.
299 bridges in Monroe County: 93 in good condition, 166 fair, and 40 poor (13.4%). “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-75 over CONRAIL RAISIN R FRONT · built 1955 | 67,800 vehicles a day |
| US-24 over STONY CREEK · built 1931 | 19,500 vehicles a day |
| US-23 NB over INDIANA & OHIO RR · built 1958 | 16,733 vehicles a day |
| US-24 over INDIAN CREEK · built 1925 | 11,702 vehicles a day |
| US-24 over OTTER CREEK · built 1924 | 7,446 vehicles a day |
| LAPLAISANCE ROAD over LAPLAISANCE CREEK · built 1988 | 7,130 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $135.2 million of work in Monroe County in fiscal 2025, about $873 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 Michigan 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 Monroe 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 Monroe County built: brayden.ozark@gmail.com.
More of Michigan: the state government and every county in Michigan.
Nearby counties: Lucas County, OH (16 mi) · Wayne County (28 mi) · Washtenaw County (30 mi) · Lenawee County (30 mi) · Ottawa County, OH (35 mi) · Wood County, OH (39 mi).