Franklin County, Ohio

County seat: Columbus · Population 1.4 million (2025) · 532 sq mi

Franklin County is the most populous of Ohio's 88 counties, with 1,361,536 people (2025 estimate). Its county seat is Columbus, which is also the state capital. The map shows its 27 cities and towns and the 6 neighboring counties.

Map of Franklin County, Ohio with cities, towns and the county boundary
Franklin County, Ohio with its cities and towns, unincorporated communities (CDPs) and neighboring counties. Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).
Download PDF (Letter) 159 KBPNG image 110 KBOhio county map

Franklin County facts

County seat
Columbus
Population (2025 estimate)
1,361,536 +2.9% since 2020
Land area
532 sq mi 17th largest of 88
Water area
11 sq mi
Population density
2,557 per sq mi
Established
1803
Named after
Benjamin Franklin American polymath and statesman (1706–1790)
Largest city
Columbus 911,199 in the county
Median household income
$75,176
Cities and towns
27 plus 5 CDPs
ZIP codes
50
Time zone
Eastern
FIPS code
39049

Cities and towns in Franklin County

Franklin County has 27 incorporated cities, towns and villages. Populations count the people living inside Franklin County; cities that cross a county line also list the other counties.

NameTypePopulation 2025Also in
Columbus (county seat)City911,199Delaware and Fairfield counties
Grove CityCity45,180
DublinCity40,613Delaware and Union counties
HilliardCity38,898
GahannaCity35,986
Upper ArlingtonCity35,893
ReynoldsburgCity31,016Fairfield and Licking counties
WestervilleCity29,046Delaware County
WhitehallCity19,805
WorthingtonCity14,543
BexleyCity12,452
New AlbanyCity11,399Licking County
Grandview HeightsCity9,112
Canal WinchesterCity8,250Fairfield County
ObetzCity7,342
GroveportCity5,818
Minerva ParkVillage1,950
UrbancrestVillage1,003
Marble CliffVillage658
ValleyviewVillage640
RiverleaVillage578
HarrisburgVillage313Pickaway County
LockbourneVillage228Pickaway County
BriceVillage110
PickeringtonCity77Fairfield County
LithopolisVillage49Fairfield County
Commercial PointVillage0Pickaway County

Unincorporated communities (CDPs)

Census-designated places are communities without their own city government; the county provides their services.

CommunityPopulationAlso in
Lincoln Village8,928
Blacklick Estates8,389
Lake Darby4,608
Huber Ridge4,111
Darbydale737

ZIP codes in Franklin County

50 ZIP codes reach into Franklin County. ZIP codes ignore county lines, so some also cover a neighboring county.

Population of Franklin County, 2020–2025

Franklin County grew by 37,743 people (+2.9%) between April 2020 and July 2025: 32,211 more births than deaths and a net gain of 5,976 people from migration.

Year (July 1)Population
20201,324,478
20211,317,228
20221,326,392
20231,337,095
20241,352,656
20251,361,536

Neighboring counties

Printable Franklin County map

The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.

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Sources

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