167,762 people (2024 Census estimate, +5.2% since 2020)
504 square miles of land · 333 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.
21 active community water systems list Fairfield County in the area they serve, reporting 97,350 people served in all (a system that crosses county lines counts its whole population).
| LANCASTER CITY PWS groundwater · local government · OH2301012 | 40,400 served |
| PICKERINGTON CITY PWS groundwater · local government · OH2301512 | 19,141 served |
| FAIRFIELD COUNTY UTILITIES PWS groundwater · local government · OH2301912 | 19,113 served |
| MILLERSPORT VILLAGE PWS groundwater · local government · OH2301212 | 3,200 served |
| BALTIMORE VILLAGE PWS groundwater · local government · OH2300112 | 2,995 served |
| CANAL POINTE INDUSTRIAL PARK PWS buys groundwater · local government · OH2346603 | 1,721 served |
| LITHOPOLIS VILLAGE PWS groundwater · local government · OH2301112 | 1,573 served |
| ODRC-SOUTHEASTERN CORRECTIONAL INSTITUTE groundwater · state · OH2301412 | 1,461 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 251 people were held in Fairfield County's jail, in Vera's latest figure (2023), or 238 per 100,000 residents ages 15–64. In 2018 it was about 303.
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.
8 school districts have their office in Fairfield County. School taxes are usually the largest part of a property tax bill.
Spent $171.1 million — $153.3 million to run schools, about $13,484 per student, plus $9.5 million on buildings and equipment. Money in: $94 million local (mostly property tax), $65.1 million state, $14.9 million federal. Long-term debt: $66.9 million.
Spent $117 million — $89.7 million to run schools, about $14,319 per student, plus $21 million on buildings and equipment. Money in: $58.6 million local (mostly property tax), $42.5 million state, $13.3 million federal. Long-term debt: $151.9 million.
Spent $30.5 million — $26.2 million to run schools, about $11,562 per student, plus $1.6 million on buildings and equipment. Money in: $23.6 million local (mostly property tax), $8 million state, $2.4 million federal. Long-term debt: $44.7 million.
Spent $27.4 million — $25.4 million to run schools, about $13,184 per student, plus $884,000 on buildings and equipment. Money in: $17 million local (mostly property tax), $12.2 million state, $3.6 million federal. Long-term debt: $16.9 million.
Spent $24.9 million — $21.3 million to run schools, about $14,016 per student, plus $3.2 million on buildings and equipment. Money in: $12.1 million local (mostly property tax), $11.2 million state, $2.6 million federal.
Spent $20.6 million — $18.6 million to run schools, about $15,354 per student, plus $1.7 million on buildings and equipment. Money in: $12 million local (mostly property tax), $8 million state, $2 million federal. Long-term debt: $2.5 million.
Spent $47.3 million — $13.7 million to run schools, about $16,146 per student, plus $30.9 million on buildings and equipment. Money in: $13.2 million local (mostly property tax), $5.1 million state, $2 million federal. Long-term debt: $48.3 million.
Spent $11.1 million — $10.1 million to run schools, about $20,703 per student, plus $225,000 on buildings and equipment. Money in: $8.9 million local (mostly property tax), $1.9 million state, $1 million 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 Fairfield County about $39 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.
322 bridges in Fairfield County: 185 in good condition, 116 fair, and 21 poor (6.5%). “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.
| WAL-42 BLACKLICK over T RES FEEDER(BLACKLICK) · built 1988 | 13,120 vehicles a day |
| GRE-22 CAMP GROUND over T HOCKING RV(CAMP GROUND · built 1985 | 9,964 vehicles a day |
| E. SIXTH AVENUE over FETTERS RUN · built 1964 | 9,364 vehicles a day |
| USR 22 over CLEAR CREEK · built 1931 | 4,031 vehicles a day |
| SR 256 over SYCAMORE CREEK · built 1971 | 2,509 vehicles a day |
| BLO-36 PICKERINGTN over T WALNUT CR (C.R. 20) · built 1900 | 1,710 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $79 million of work in Fairfield County in fiscal 2025, about $497 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 Fairfield 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 Fairfield County built: brayden.ozark@gmail.com.
More of Ohio: the state government and every county in Ohio.
Nearby counties: Hocking County (19 mi) · Perry County (21 mi) · Pickaway County (24 mi) · Licking County (25 mi) · Franklin County (25 mi) · Vinton County (35 mi).