36,584 people (2024 Census estimate, +2.0% since 2020)
339 square miles of land · 108 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.
6 active community water systems list Adams County in the area they serve, reporting 16,779 people served in all (a system that crosses county lines counts its whole population).
| DECATUR WATER DEPARTMENT groundwater · local government · IN5201002 | 9,900 served |
| BERNE WATER DEPARTMENT groundwater · local government · IN5201001 | 4,388 served |
| GENEVA WATER DEPARTMENT groundwater · local government · IN5201003 | 1,359 served |
| MONROE WATER DEPARTMENT groundwater · local government · IN5201004 | 872 served |
| OAKWOOD COMMUNITY ASSOCIATION, INC. groundwater · private · IN5201009 | 210 served |
| RIVERBEND ESTATES groundwater · private · IN5201006 | 50 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 99 people were held in Adams County's jail, in Vera's latest figure (2024), or 476 per 100,000 residents ages 15–64. In 2019 it was about 153.
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.
3 school districts have their office in Adams County. School taxes are usually the largest part of a property tax bill.
Spent $33.6 million — $22.7 million to run schools, about $14,074 per student, plus $8.3 million on buildings and equipment. Money in: $10.5 million local (mostly property tax), $15.8 million state, $11.1 million federal. Long-term debt: $32.7 million.
Spent $24.5 million — $15.7 million to run schools, about $11,707 per student, plus $7.7 million on buildings and equipment. Money in: $5.8 million local (mostly property tax), $11.6 million state, $6.4 million federal. Long-term debt: $19.9 million.
Spent $23.2 million — $17.8 million to run schools, about $13,796 per student, plus $4.8 million on buildings and equipment. Money in: $5.9 million local (mostly property tax), $12 million state, $6.5 million federal. Long-term debt: $13.4 million.
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 Adams County about $11.9 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Moderate; social vulnerability: Very High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
195 bridges in Adams County: 90 in good condition, 103 fair, and 2 poor (1.0%). “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.
| PIQUA ROAD over GERKE DITCH · built 1976 | 2,572 vehicles a day |
| VANBUREN STREET over YELLOW CREEK · built 1930 | 135 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $4.5 million of work in Adams County in fiscal 2025, about $127 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 Indiana 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 Adams 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 Adams County built: brayden.ozark@gmail.com.
More of Indiana: the state government and every county in Indiana.
Nearby counties: Wells County (15 mi) · Van Wert County, OH (20 mi) · Mercer County, OH (22 mi) · Jay County (22 mi) · Allen County (25 mi) · Blackford County (28 mi).