1,356,303 people (2024 Census estimate, +2.4% since 2020)
532 square miles of land · 2,547 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.
31 active community water systems list Franklin County in the area they serve, reporting 1,496,430 people served in all (a system that crosses county lines counts its whole population).
| COLUMBUS PUBLIC WATER SYSTEM surface water · local government · OH2504412 | 1,309,468 served |
| WESTERVILLE CITY PWS surface water · local government · OH2503411 | 39,000 served |
| REYNOLDSBURG CITY PWS buys surface water · local government · OH2503203 | 37,847 served |
| GAHANNA CITY PWS buys surface water · local government · OH2501303 | 33,258 served |
| BEXLEY CITY PWS buys surface water · local government · OH2500103 | 14,250 served |
| JEFFERSON WATER AND SEWER DISTRICT PWS groundwater · private · OH2504012 | 11,294 served |
| CANAL WINCHESTER CITY PWS groundwater · local government · OH2500312 | 9,286 served |
| SANITARY DISTRICT #4 buys surface water · local government · OH2501003 | 8,575 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 1,661 people were held in Franklin County's jail, in Vera's latest figure (2023), or 187 per 100,000 residents ages 15–64. In 2018 it was about 2,213.
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.
17 school districts have their office in Franklin County. School taxes are usually the largest part of a property tax bill.
Spent $1.1 billion — $1 billion to run schools, about $22,307 per student, plus $71.7 million on buildings and equipment. Money in: $656.9 million local (mostly property tax), $219.9 million state, $309.9 million federal. Long-term debt: $384.1 million.
Spent $385.7 million — $313.3 million to run schools, about $14,393 per student, plus $58.4 million on buildings and equipment. Money in: $168.7 million local (mostly property tax), $169.3 million state, $67.2 million federal. Long-term debt: $210.7 million.
Spent $332.7 million — $278.3 million to run schools, about $16,843 per student, plus $44.3 million on buildings and equipment. Money in: $245.1 million local (mostly property tax), $40.2 million state, $14.8 million federal. Long-term debt: $217.9 million.
Spent $259.4 million — $244.2 million to run schools, about $15,182 per student, plus $8.6 million on buildings and equipment. Money in: $173.6 million local (mostly property tax), $67.1 million state, $18.2 million federal. Long-term debt: $113.2 million.
Spent $274.2 million — $216.7 million to run schools, about $14,875 per student, plus $47.7 million on buildings and equipment. Money in: $184.5 million local (mostly property tax), $57.5 million state, $26.1 million federal. Long-term debt: $162.8 million.
Spent $197.8 million — $164.2 million to run schools, about $15,189 per student, plus $22.6 million on buildings and equipment. Money in: $193.8 million local (mostly property tax), $33.4 million state, $10.3 million federal. Long-term debt: $113.6 million.
Spent $176.5 million — $115.2 million to run schools, about $14,473 per student, plus $52.3 million on buildings and equipment. Money in: $112.6 million local (mostly property tax), $21.7 million state, $13.1 million federal. Long-term debt: $434.5 million.
Spent $105 million — $97 million to run schools, about $13,148 per student, plus $3.9 million on buildings and equipment. Money in: $46.9 million local (mostly property tax), $50.4 million state, $16.5 million federal. Long-term debt: $61.5 million.
And 9 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 High compared with other U.S. counties. FEMA estimates natural hazards cost Franklin County about $331.4 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.
920 bridges in Franklin County: 655 in good condition, 238 fair, and 27 poor (2.9%). “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.
| 270WB to 71SB over RAMP 71NB-270WB · built 1966 | 104,140 vehicles a day |
| IR 670 over SCIOTO R USR33 RR · built 1972 | 75,912 vehicles a day |
| I-70 over IR 70W OVER SCIOTO RIVER · built 1975 | 61,022 vehicles a day |
| I-270 over S INDIAN RUN · built 1968 | 57,982 vehicles a day |
| SR 104 over NS RR · built 1987 | 48,060 vehicles a day |
| SR 104 over SCIOTO RIVER · built 1972 | 43,411 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $3.8 billion of work in Franklin County in fiscal 2025, about $2,908 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 Franklin 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 Franklin County built: brayden.ozark@gmail.com.
More of Ohio: the state government and every county in Ohio.
Nearby counties: Delaware County (21 mi) · Madison County (21 mi) · Pickaway County (22 mi) · Fairfield County (25 mi) · Licking County (29 mi) · Union County (29 mi).