14,042 people (2024 Census estimate, −3.1% since 2020)
402 square miles of land · 35 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.
15 active community water systems list Harrison County in the area they serve, reporting 10,450 people served in all (a system that crosses county lines counts its whole population).
| CADIZ VILLAGE PWS surface water · local government · OH3400214 | 3,353 served |
| TRI-COUNTY WATER AUTHORITY buys groundwater · private · OH3401403 | 2,370 served |
| HOPEDALE VILLAGE PWS buys surface water · local government · OH3400811 | 984 served |
| SCIO PWS groundwater · local government · OH3401312 | 690 served |
| JEWETT VILLAGE groundwater · local government · OH3400912 | 650 served |
| BOWERSTON VILLAGE PWS groundwater · local government · OH3400112 | 483 served |
| FREEPORT VILLAGE PWS groundwater · local government · OH3400412 | 400 served |
| NEW ATHENS PWS buys groundwater · local government · OH3401103 | 367 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 18 people were held in Harrison County's jail, in Vera's latest figure (2023), or 211 per 100,000 residents ages 15–64. In 2018 it was about 0.
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.
1 school district has its office in Harrison County. School taxes are usually the largest part of a property tax bill.
Spent $31.4 million — $23.3 million to run schools, about $16,547 per student, plus $6.2 million on buildings and equipment. Money in: $24.3 million local (mostly property tax), $10.3 million state, $3.2 million federal. Long-term debt: $26 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: Very Low compared with other U.S. counties. FEMA estimates natural hazards cost Harrison County about $4.1 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Moderate; social vulnerability: Relatively High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
138 bridges in Harrison County: 54 in good condition, 64 fair, and 20 poor (14.5%). “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.
| US 22 WB over COLUMBUS & OHIO R.RR · built 1960 | 3,875 vehicles a day |
| US 22 & US 250 EB over COLUMBUS & OHIO R.RR · built 1960 | 3,875 vehicles a day |
| SR 800 over STILLWATER CREEK · built 1927 | 1,611 vehicles a day |
| NO DATA over STILLWATER CREEK · built 1900 | 540 vehicles a day |
| COUNTY RD 13 over NORTH FORK OF SHORT CREE · built 1960 | 448 vehicles a day |
| SR 799 over MCFADDEN RUN · built 1948 | 352 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $16.5 million of work in Harrison County in fiscal 2025, about $1,141 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 Harrison 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 Harrison County built: brayden.ozark@gmail.com.
More of Ohio: the state government and every county in Ohio.
Nearby counties: Jefferson County (19 mi) · Carroll County (20 mi) · Belmont County (20 mi) · Tuscarawas County (23 mi) · Guernsey County (27 mi) · Brooke County, WV (27 mi).