• county
  • FIPS 39049
  • Largest town: Columbus

Franklin County, Ohio

Franklin County had 1,356,303 residents in the Census Vintage 2024 estimate, on 532.4 square miles of land. It is the most populous of Ohio's 88 county-equivalents.

Population
1,356,303
#1 of 88 in Ohio · #32 in US
Area
532.4 sq mi
#17 of 88 in Ohio · #1,960 in US
Density
2,547 / sq mi
#2 of 88 in Ohio · #50 in US
Median household income
$71,730
#27 of 88 in Ohio · #875 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Franklin County within Ohio. Pin: Columbus.

Measure from here

Tools and pages that start from Franklin County

Franklin County population, land area and income

Franklin County had 1,356,303 residents in the Census Vintage 2024 estimate, on 532.4 square miles of land. It is the most populous of Ohio's 88 county-equivalents. That works out to 2,547.4 people per square mile, 26.5 times the US average of 96.3, and in the top tenth nationally.

The median county-equivalent in Ohio has 58,250 residents, so Franklin County is 23.3 times that size.

Its SAIPE 2023 median household income of $71,730 is above the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

1,356,303

3144th1st

32nd of 3,144 (US)

Land area

532 sq mi

3144th1st

1960th of 3,144 (US)

Density

2,547.4 / sq mi

3144th1st

50th of 3,144 (US)

Median household income

$71,730

3143rd1st

875th of 3,143 (US)

Rank within Ohio (88)

Population

1,356,303

88th1st

1st of 88 (OH)

Land area

532 sq mi

88th1st

17th of 88 (OH)

Density

2,547.4 / sq mi

88th1st

2nd of 88 (OH)

Median household income

$71,730

88th1st

27th of 88 (OH)

How Franklin County's population changed since 2020

Franklin County gained 31,798 residents between the July 2020 and July 2024 estimates, a rise of 2.4%. That ranks 13th of 88 in Ohio for growth. The median Ohio county changed by -0.2%, and the state as a whole by +0.7%.

Since the April 2020 estimates base, Franklin County recorded 73,753 births and 47,611 deaths, a natural change of +26,142. Net international migration added +53,498 and net domestic migration, people moving to or from other US counties, came to -46,893. The largest single component was international migration, which added 53,498 people.

1.32M20201.32M20211.33M20221.34M20231.36M2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
73,753
Deaths
47,611
Net international migration
+53,498
Net domestic migration
-46,893
Change, July 2023 to July 2024
+17,400

Where Franklin County is

The Census internal point of Franklin County is at 39.969900, -83.009100. It sits in UTM zone 17N. The map shades Ohio's 88 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Franklin County outlined. Dots are towns of 1,000+ people with residents in it.

Shelby County: -0.4%Defiance County: +1.0%Darke County: -0.8%Seneca County: -0.6%Wood County: +0.6%Fayette County: -0.7%Clark County: -0.7%Hocking County: -2.2%Jackson County: +0.2%Miami County: +2.7%Richland County: -0.1%Union County: +13.7%Auglaize County: -1.2%Hancock County: +0.1%Morgan County: -1.6%Van Wert County: -0.1%Hardin County: -1.0%Paulding County: -0.3%Portage County: +1.2%Delaware County: +10.6%Harrison County: -3.1%Ross County: -1.3%Crawford County: -0.9%Clinton County: -0.0%Henry County: -0.5%Pike County: -0.0%Cuyahoga County: -1.7%Highland County: +1.0%Knox County: +1.7%Ottawa County: -1.5%Huron County: -0.6%Erie County: -2.2%Holmes County: +1.0%Lawrence County: -4.0%Marion County: -0.6%Fairfield County: +5.2%Putnam County: -0.6%Guernsey County: -0.5%Vinton County: -2.1%Gallia County: -1.2%Trumbull County: -0.7%Wayne County: -0.2%Perry County: +0.6%Ashland County: -0.1%Fulton County: -1.4%Brown County: +1.4%Lucas County: -1.1%Stark County: -0.1%Medina County: +1.1%Belmont County: -2.4%Williams County: -1.4%Mahoning County: -1.0%Noble County: +1.1%Greene County: +2.5%Preble County: -0.5%Allen County: -1.2%Athens County: +1.3%Jefferson County: -2.0%Adams County: +0.8%Monroe County: -2.3%Washington County: -2.2%Logan County: -0.1%Franklin County: +2.4%Warren County: +5.3%Wyandot County: -2.1%Licking County: +3.4%Hamilton County: +0.8%Clermont County: +2.6%Butler County: +2.2%Coshocton County: +1.1%Geauga County: -0.0%Sandusky County: -0.0%Ashtabula County: -0.6%Carroll County: -0.9%Tuscarawas County: -1.2%Morrow County: +2.7%Montgomery County: +0.1%Mercer County: +0.3%Lake County: -0.1%Pickaway County: +6.0%Madison County: +3.8%Muskingum County: +0.1%Meigs County: -3.0%Columbiana County: -1.8%Lorain County: +2.7%Scioto County: -2.8%Champaign County: +0.4%Summit County: -0.3%
Change 2020 to 2024
  1. < -1.4%
  2. < -0.6%
  3. < -0.0%
  4. < +1.1%
  5. ≥ +1.1%
no data

Orange pin: Franklin County internal point. Dark pin: Columbus.

Internal point

Decimal
39.969900, -83.009100
DMS
39°58'11.64"N 83°00'32.76"W
UTM
17N 328422.3E 4426349.3N
Geohash
dphgrh69e
Plus code
86FRXX9R+X9

Towns in Franklin County

20 incorporated places of 1,000+ people have residents in Franklin County, 1,253,597 people together, or 92% of the county. Each figure counts only the part of the town inside Franklin County; towns marked "part" extend into another county. The largest is Columbus with 905,883.

  1. 01Columbus (part)905,883
  2. 02Grove City44,019
  3. 03Dublin (part)40,731
  4. 04Hilliard38,832
  5. 05Upper Arlington36,140
  6. 06Gahanna35,544
  7. 07Reynoldsburg (part)30,771
  8. 08Westerville (part)29,250
  9. 09Whitehall19,940
  10. 10Worthington14,649
  11. 11Bexley12,793
  12. 12New Albany (part)11,317
  13. 13Grandview Heights9,184
  14. 14Canal Winchester (part)8,271
  15. 15Obetz7,306
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Franklin County

The Census 2024 county adjacency file lists 6 neighbors for Franklin County. The most populous is Delaware County, OH, with 237,966 residents. Distances run between Census internal points in a straight line.

Distance to Columbus and the nearest big city

Columbus is inside or next to Franklin County. The nearest place of 100,000 or more is Columbus, OH (population 933,263), 1.6 miles away.

Franklin County FIPS code

The FIPS code of Franklin County is 39049: state code 39 for Ohio plus county code 049. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $71,730.

Questions people ask

What is the population of Franklin County, Ohio?

The Census Vintage 2024 estimate for July 1, 2024 is 1,356,303. That is up 31,798 people (2.4%) from the July 2020 estimate of 1,324,505.

What is the FIPS code of Franklin County?

39049. The first two digits (39) are Ohio; the last three (049) identify the county.

What is the largest town in Franklin County?

Columbus, with 905,883 residents inside Franklin County in 2024 (933,263 across all 3 counties it spans).

Which counties border Franklin County?

6 county-equivalents border it in the Census 2024 adjacency file: Delaware County, OH; Licking County, OH; Fairfield County, OH; Union County, OH; Pickaway County, OH; Madison County, OH.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.