• county
  • FIPS 39097
  • Largest town: London

Madison County, Ohio

Madison County had 45,531 residents in the Census Vintage 2024 estimate, on 466.7 square miles of land. It ranks 53rd of 88 in Ohio by population and 33rd by land area.

Population
45,531
#53 of 88 in Ohio · #1,084 in US
Area
466.7 sq mi
#33 of 88 in Ohio · #2,205 in US
Density
98 / sq mi
#56 of 88 in Ohio · #929 in US
Median household income
$81,836
#10 of 88 in Ohio · #407 in US

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

Madison County within Ohio. Pin: Columbus.

Measure from here

Tools and pages that start from Madison County

Madison County population, land area and income

Madison County had 45,531 residents in the Census Vintage 2024 estimate, on 466.7 square miles of land. It ranks 53rd of 88 in Ohio by population and 33rd by land area. That works out to 97.6 people per square mile, near the US average of 96.3, and above the national county median.

The median county-equivalent in Ohio has 58,250 residents; Madison County is somewhat smaller.

Its SAIPE 2023 median household income of $81,836 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

45,531

3144th1st

1084th of 3,144 (US)

Land area

467 sq mi

3144th1st

2205th of 3,144 (US)

Density

97.6 / sq mi

3144th1st

929th of 3,144 (US)

Median household income

$81,836

3143rd1st

407th of 3,143 (US)

Rank within Ohio (88)

Population

45,531

88th1st

53rd of 88 (OH)

Land area

467 sq mi

88th1st

33rd of 88 (OH)

Density

97.6 / sq mi

88th1st

56th of 88 (OH)

Median household income

$81,836

88th1st

10th of 88 (OH)

How Madison County's population changed since 2020

Madison County gained 1,673 residents between the July 2020 and July 2024 estimates, a rise of 3.8%. That ranks 6th 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, Madison County recorded 1,896 births and 2,040 deaths, a natural change of -144. Net international migration added +187 and net domestic migration, people moving to or from other US counties, came to +1,541. The largest single component was domestic migration, which added 1,541 people.

43.9k202044.4k202143.6k202244.7k202345.5k2024
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
1,896
Deaths
2,040
Net international migration
+187
Net domestic migration
+1,541
Change, July 2023 to July 2024
+863

Where Madison County is

The Census internal point of Madison County is at 39.896600, -83.400900. 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 Madison 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: Madison County internal point. Dark pin: Columbus.

Internal point

Decimal
39.896600, -83.400900
DMS
39°53'47.76"N 83°24'3.24"W
UTM
17N 294740.3E 4419040.2N
Geohash
dphdynvqd
Plus code
86FRVHWX+JJ

Towns in Madison County

4 incorporated places of 1,000+ people have residents in Madison County, 21,376 people together, or 47% of the county. Each figure counts only the part of the town inside Madison County; towns marked "part" extend into another county. The largest is London with 10,743.

  1. 01London10,743
  2. 02West Jefferson4,943
  3. 03Plain City (part)3,620
  4. 04Mount Sterling2,070
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Madison County

The Census 2024 county adjacency file lists 7 neighbors for Madison County. The most populous is Franklin County, OH, with 1,356,303 residents. Distances run between Census internal points in a straight line.

Distance to Columbus and the nearest big city

Columbus is 21.7 miles ENE of Madison County's internal point in a straight line. The nearest place of 100,000 or more is Columbus, OH (population 933,263), 22.9 miles away. The nearest place of 10,000 or more is London, OH (population 10,743), 2.1 miles away.

Madison County FIPS code

The FIPS code of Madison County is 39097: state code 39 for Ohio plus county code 097. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $81,836.

Questions people ask

What is the population of Madison County, Ohio?

The Census Vintage 2024 estimate for July 1, 2024 is 45,531. That is up 1,673 people (3.8%) from the July 2020 estimate of 43,858.

What is the FIPS code of Madison County?

39097. The first two digits (39) are Ohio; the last three (097) identify the county.

What is the largest town in Madison County?

London, with 10,743 residents inside Madison County in 2024.

Which counties border Madison County?

7 county-equivalents border it in the Census 2024 adjacency file: Franklin County, OH; Greene County, OH; Clark County, OH; Union County, OH; Pickaway County, OH; Champaign County, OH; Fayette 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.