100,866 people (2024 Census estimate, −1.2% since 2020)
403 square miles of land · 251 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.
8 active community water systems list Allen County in the area they serve, reporting 84,433 people served in all (a system that crosses county lines counts its whole population).
| LIMA CITY surface water · local government · OH0200811 | 65,619 served |
| DELPHOS CITY surface water · local government · OH0200412 | 7,101 served |
| ELIDA VILLAGE buys surface water · local government · OH0200503 | 4,109 served |
| BLUFFTON VILLAGE buys surface water · local government · OH0200112 | 4,082 served |
| SPENCERVILLE VILLAGE groundwater · local government · OH0201312 | 2,261 served |
| BRIGHTSTAR LIMA MHP PWS groundwater · private · OH0200712 | 480 served |
| SUN VALLEY FAMILY CAMPGROUND groundwater · private · OH0252212 | 462 served |
| BEAVERDAM VILLAGE PWS groundwater · local government · OH0200012 | 319 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 186 people were held in Allen County's jail, in Vera's latest figure (2023), or 300 per 100,000 residents ages 15–64. In 2018 it was about 281.
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.
9 school districts have their office in Allen County. School taxes are usually the largest part of a property tax bill.
Spent $71.3 million — $65.6 million to run schools, about $19,321 per student, plus $3 million on buildings and equipment. Money in: $13.2 million local (mostly property tax), $42.6 million state, $16.1 million federal. Long-term debt: $5.7 million.
Spent $31.9 million — $30.4 million to run schools, about $13,260 per student, plus $959,000 on buildings and equipment. Money in: $20.8 million local (mostly property tax), $7.9 million state, $2.9 million federal. Long-term debt: $450,000.
Spent $33.3 million — $29.4 million to run schools, about $13,472 per student, plus $973,000 on buildings and equipment. Money in: $17.4 million local (mostly property tax), $11.7 million state, $4.9 million federal. Long-term debt: $45.7 million.
Spent $22.8 million — $20.8 million to run schools, about $12,319 per student, plus $761,000 on buildings and equipment. Money in: $12.4 million local (mostly property tax), $8.7 million state, $2.2 million federal. Long-term debt: $21.5 million.
Spent $14 million — $13.1 million to run schools, about $10,839 per student, plus $780,000 on buildings and equipment. Money in: $6.5 million local (mostly property tax), $6.7 million state, $1 million federal. Long-term debt: $785,000.
Spent $17.1 million — $11.7 million to run schools, about $10,941 per student, plus $5.1 million on buildings and equipment. Money in: $5.4 million local (mostly property tax), $8.1 million state, $1.1 million federal. Long-term debt: $3.7 million.
Spent $14.1 million — $12.7 million to run schools, about $13,662 per student, plus $1.2 million on buildings and equipment. Money in: $6.1 million local (mostly property tax), $7.4 million state, $1.2 million federal. Long-term debt: $3.3 million.
Spent $20.3 million — $14.3 million to run schools, about $17,302 per student, plus $1.1 million on buildings and equipment. Money in: $12.1 million local (mostly property tax), $10.4 million state, $1.8 million federal. Long-term debt: $31.1 million.
And 1 more.
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 Allen County about $31.9 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very High; social vulnerability: Relatively Moderate.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
364 bridges in Allen County: 252 in good condition, 79 fair, and 33 poor (9.1%). “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.
| FT. AMANDA RD. over LITTLE OTTAWA FT AMANDA · built 1958 | 6,549 vehicles a day |
| BLUF - MAIN ST over MARSH RUN - DIXIE HWY · built 1927 | 3,640 vehicles a day |
| BLUF - MAIN ST over RILEY CREEK - DIXIE HWY · built 1925 | 3,481 vehicles a day |
| ADGATE RD. over OTTAWA RIVER ADGATE RD · built 1972 | 3,457 vehicles a day |
| BREESE RD. over FREUND CREEK - BREESE RD · built 1958 | 2,133 vehicles a day |
| SLABTOWN RD. over STREAM SLABTOWN RD · built 1975 | 1,848 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $31.3 million of work in Allen County in fiscal 2025, about $306 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 Allen 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 Allen County built: brayden.ozark@gmail.com.
More of Ohio: the state government and every county in Ohio.
Nearby counties: Auglaize County (16 mi) · Putnam County (17 mi) · Hardin County (24 mi) · Van Wert County (26 mi) · Hancock County (28 mi) · Shelby County (30 mi).