40,801 people (2024 Census estimate, −0.5% since 2020)
424 square miles of land · 96 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.
12 active community water systems list Preble County in the area they serve, reporting 21,241 people served in all (a system that crosses county lines counts its whole population).
| EATON PUBLIC WATER SYSTEM groundwater · local government · OH6801612 | 8,400 served |
| LAKENGREN WATER AUTHORITY groundwater · private · OH6800712 | 2,950 served |
| CAMDEN, VILLAGE OF groundwater · local government · OH6800112 | 2,050 served |
| LEWISBURG VILLAGE PWS groundwater · local government · OH6800812 | 1,800 served |
| NEW PARIS VILLAGE PWS groundwater · local government · OH6800912 | 1,681 served |
| WEST ALEXANDRIA, VILLAGE OF groundwater · local government · OH6801312 | 1,385 served |
| GRATIS VILLAGE PWS groundwater · local government · OH6800612 | 990 served |
| ELDORADO, VILLAGE OF groundwater · local government · OH6800512 | 539 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 46 people were held in Preble County's jail, in Vera's latest figure (2023), or 184 per 100,000 residents ages 15–64. In 2018 it was about 60.
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.
6 school districts have their office in Preble County. School taxes are usually the largest part of a property tax bill.
Spent $31.5 million — $28.4 million to run schools, about $15,242 per student, plus $611,000 on buildings and equipment. Money in: $18.1 million local (mostly property tax), $11.9 million state, $2.7 million federal. Long-term debt: $24.3 million.
Spent $18.8 million — $17.7 million to run schools, about $13,066 per student, plus $1 million on buildings and equipment. Money in: $8.5 million local (mostly property tax), $9 million state, $2.6 million federal.
Spent $17.6 million — $15.3 million to run schools, about $16,454 per student, plus $995,000 on buildings and equipment. Money in: $7.6 million local (mostly property tax), $7.6 million state, $2.2 million federal.
Spent $13.2 million — $11.6 million to run schools, about $15,107 per student, plus $886,000 on buildings and equipment. Money in: $6.3 million local (mostly property tax), $5.9 million state, $1.5 million federal. Long-term debt: $1.5 million.
Spent $13.7 million — $12.5 million to run schools, about $16,930 per student, plus $932,000 on buildings and equipment. Money in: $6.7 million local (mostly property tax), $5.4 million state, $1.7 million federal.
Spent $2.5 million — $1.3 million to run schools, about $10,403 per student, plus $134,000 on buildings and equipment. Money in: $679,000 local (mostly property tax), $1.4 million state, $214,000 federal.
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 Preble County about $14.6 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively High; social vulnerability: Relatively Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
363 bridges in Preble County: 226 in good condition, 98 fair, and 39 poor (10.7%). “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.
| WASH JACKSON RD over SEVEN MILE CREEK · built 1900 | 4,665 vehicles a day |
| SR122 over ELK CREEK · built 1983 | 2,890 vehicles a day |
| SR 503 over TRIBUTARY TWIN CREEK · built 1959 | 2,567 vehicles a day |
| US 40 over PRICE CREEK · built 1968 | 2,415 vehicles a day |
| LEXINGTON RD over MILNERS FORK · built 1910 | 2,340 vehicles a day |
| SR726 over PRICE CREEK · built 1984 | 1,744 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $6.2 million of work in Preble County in fiscal 2025, about $152 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 Preble 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 Preble County built: brayden.ozark@gmail.com.
More of Ohio: the state government and every county in Ohio.
Nearby counties: Union County, IN (17 mi) · Montgomery County (19 mi) · Wayne County, IN (21 mi) · Butler County (21 mi) · Darke County (27 mi) · Fayette County, IN (29 mi).