36,554 people (2024 Census estimate, −1.4% since 2020)
421 square miles of land · 87 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.
13 active community water systems list Williams County in the area they serve, reporting 21,741 people served in all (a system that crosses county lines counts its whole population).
| BRYAN CITY PWS groundwater · local government · OH8600012 | 8,729 served |
| MONTPELIER VILLAGE groundwater · local government · OH8600912 | 4,280 served |
| EDGERTON VILLAGE groundwater · local government · OH8600312 | 1,881 served |
| WEST UNITY VILLAGE groundwater · local government · OH8601812 | 1,760 served |
| PIONEER VILLAGE groundwater · local government · OH8601312 | 1,449 served |
| STRYKER VILLAGE groundwater · local government · OH8601712 | 1,259 served |
| EDON VILLAGE groundwater · local government · OH8600512 | 783 served |
| AQUA OHIO - SENECA groundwater · private · OH8601512 | 750 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 138 people were held in Williams County's jail, in Vera's latest figure (2023), or 612 per 100,000 residents ages 15–64. In 2018 it was about 158.
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.
7 school districts have their office in Williams County. School taxes are usually the largest part of a property tax bill.
Spent $28 million — $25.6 million to run schools, about $14,045 per student, plus $1.5 million on buildings and equipment. Money in: $17.7 million local (mostly property tax), $10.5 million state, $2.2 million federal. Long-term debt: $27.4 million.
Spent $14.4 million — $13.8 million to run schools, about $17,399 per student, plus $417,000 on buildings and equipment. Money in: $5.2 million local (mostly property tax), $8.1 million state, $1.3 million federal. Long-term debt: $1.4 million.
Spent $10.6 million — $9.7 million to run schools, about $17,637 per student, plus $561,000 on buildings and equipment. Money in: $4.2 million local (mostly property tax), $4.6 million state, $773,000 federal. Long-term debt: $2.7 million.
Spent $10.5 million — $8.8 million to run schools, about $16,237 per student, plus $891,000 on buildings and equipment. Money in: $4.8 million local (mostly property tax), $4.6 million state, $817,000 federal. Long-term debt: $4.8 million.
Spent $9.3 million — $8.2 million to run schools, about $15,345 per student, plus $362,000 on buildings and equipment. Money in: $3.6 million local (mostly property tax), $5.1 million state, $881,000 federal. Long-term debt: $675,000.
Spent $12.3 million — $8.4 million to run schools, about $16,968 per student, plus $3.5 million on buildings and equipment. Money in: $4.1 million local (mostly property tax), $5.2 million state, $1.3 million federal. Long-term debt: $5.4 million.
Spent $9.3 million — $7.5 million to run schools, about $19,334 per student, plus $1.1 million on buildings and equipment. Money in: $4.9 million local (mostly property tax), $3.8 million state, $506,000 federal. Long-term debt: $2.6 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 Williams County about $12.5 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively High; social vulnerability: Relatively Moderate.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
241 bridges in Williams County: 118 in good condition, 115 fair, and 8 poor (3.3%). “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.
| EBERLY HOME RD over I80 OHIO TPK · built 1954 | 16,000 vehicles a day |
| CR 304 (12/C) over STOMBAUGH DITCH #510 · built 1935 | 2,648 vehicles a day |
| CR 2 (25) over BRUSH CREEK · built 1987 | 453 vehicles a day |
| TR 141 (17.75) over BEAVER CREEK · built 1997 | 324 vehicles a day |
| TR 192 (17) over DITCH #40 · built 1966 | 324 vehicles a day |
| TR 48 (M) over DITCH #447 · built 1960 | 233 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $8.7 million of work in Williams County in fiscal 2025, about $236 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 Ohio 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 Williams 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 Williams County built: brayden.ozark@gmail.com.
More of Ohio: the state government and every county in Ohio.
Nearby counties: Defiance County (18 mi) · Steuben County, IN (22 mi) · Fulton County (24 mi) · DeKalb County, IN (25 mi) · Hillsdale County, MI (25 mi) · Paulding County (31 mi).