Clark County, Ohio Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 21st-largest in Ohio

The population of Clark County, Ohio is 135,445 as of the 2023 American Community Survey, making it the 21st-largest county in Ohio. The median household income is $60,846, the median home value is $155,900, and the median age is 41.2.

The population of Clark County has declined 2.4% since 2010 (138,272 → 134,985), a -0.17% annualized rate.

Clark County within Ohio · Source: US Census TIGER/Line via us-atlas

135,445

Population

-0.17%

Annual growth

342

People / sq mi

$60,846

Median Income

$155,900

Median Home Value

Clark County covers 396 sq mi of land at 342.1 people per square mile.

About Clark County, OH

Clark County is a county in Ohio with a population of 135,445. It ranks #21 among counties in Ohio by population. The median age is 41.2, older than the national median. The population is 49.1% male and 50.9% female.

The median household income in Clark County is $60,846, below the US median of $74,580. 11.3% of residents live below the federal poverty level. Home values sit at a median of $155,900, with monthly rent averaging $840. The homeownership rate of 69.2% is higher than the national rate of 64.8%.

Educational attainment in Clark County reflects 18.5% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 8.3% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 22.9 minutes each way.

Clark County Population History (2010-2024)

The county of Clark County had a population of 138,272 in 2010 and 134,985 in 2024, a -2.4% growth over 14 years. The peak was 138,272 in 2010. Average annual growth rate: -0.17%.

134,985

Population (2024)

138,272

Population (2010)

138,272

Peak (2010)

-0.17%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	138,272	-	-	estimate
2011	137,823	-449	-0.32%	estimate
2012	137,198	-625	-0.45%	estimate
2013	136,682	-516	-0.38%	estimate
2014	136,364	-318	-0.23%	estimate
2015	135,810	-554	-0.41%	estimate
2016	134,805	-1,005	-0.74%	estimate
2017	134,636	-169	-0.13%	estimate
2018	134,697	+61	+0.05%	estimate
2019	134,315	-382	-0.28%	estimate
2020	135,894	+1,579	+1.18%	estimate
2021	135,490	-404	-0.30%	estimate
2022	134,686	-804	-0.59%	estimate
2023	134,735	+49	+0.04%	estimate
2024	134,985	+250	+0.19%	estimate

Race & Ethnicity

White	83.5%
Black or African American	8.2%
Asian	0.0%
Hispanic or Latino (any race)	1.1%
Two or More Races	0.0%

Age & Sex

41.2

Median Age

50.9%

Female

49.1%

Male

20.0%

Age 65+

Age Distribution

Under 5

5.8%

5–9

6.4%

10–14

6.3%

15–19

6.5%

20–24

5.9%

25–34

11.9%

35–44

11.3%

45–54

12.2%

55–59

7.0%

60–64

6.8%

65–74

11.8%

75–84

6.0%

85+

2.2%

Children (under 15): 18.5% · Seniors (65+): 20.0%

Income & Poverty

Median household income	$60,846$-8,834 vs state
Mean household income	$77,705
Per-capita income	$32,421
Poverty rate	11.3%+2.1% vs state
Unemployment rate	3.8%
Employment-to-population	55.2%

Top Industries by Employment

Professional & business services

22.9%

Manufacturing

17.2%

Education & health care

9.1%

Finance & real estate

8.4%

Construction

6.9%

Retail trade

5.6%

Public administration

4.9%

Information

4.3%

The largest employment sector in Clark County is professional & business services, accounting for 22.9% of workers.

How residents commute

0.4%

Drive alone

2.0%

Carpool

79.6%

Public transit

8.3%

Work from home

22.9 min

Avg commute

Housing

$155,900$-43,300 vs state

Median home value

$840

Median rent

69.2%

Homeownership rate

61,092

Total housing units

90.6%

Occupied

9.4%

Vacant

30.8%

Renter-occupied

Social & access

93.2%

With health insurance

93.7%

With broadband internet

18.7%

Foreign-born

9.3%

Veterans (18+)

16.9%

With a disability

96.5%

Speak language other than English at home

Education

89.3%

High School+

18.5%

Bachelor's+

Largest cities in Ohio

Columbus (906,480)Cleveland (367,523)Cincinnati (309,595)Toledo (268,461)Akron (189,526)Dayton (136,741)Parma (80,131)Canton (70,105)Lorain (65,207)Hamilton (63,124)All Ohio cities →

Other counties in Ohio

Franklin County (1,321,635)Cuyahoga County (1,249,418)Hamilton County (827,878)Summit County (538,087)Montgomery County (535,528)Lucas County (428,748)Butler County (389,910)Stark County (373,764)Lorain County (314,588)Warren County (246,364)All Ohio counties →

Part of Ohio

Ohio demographic profile All Ohio data →

Metro areas in Ohio

Cincinnati (2,255,257)Cleveland (2,171,978)Columbus (2,151,847)Dayton (813,608)Akron (699,508)Toledo (602,977)Youngstown (428,430)Canton (400,495)All US metros →

County rankings

US Counties by Population Richest US Counties by Median Household Income Expensive US Counties by Home Value Educated US Counties Counties With Highest Poverty Rates Youngest US Counties by Median Age Oldest US Counties by Median Age Cheapest US Counties by Median Home Value Racially Diverse US Counties Counties With Largest Hispanic Population All rankings →

Frequently Asked Questions

Clark County, Ohio has a population of 135,445 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 21st-largest county in Ohio. Population density is 342 people per square mile.

The population of Clark County has declined 2.4% since 2010 (138,272 → 134,985), a -0.17% annualized rate.

The median household income in Clark County, Ohio is $60,846, with mean (average) household income of $77,705 and per-capita income of $32,421. 11.3% of residents live below the federal poverty level.

In Clark County, the largest racial and ethnic groups are White (83.5%), Black or African American (8.2%), Hispanic or Latino (1.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in Clark County, Ohio is 41.2 years. Residents are 50.9% female and 49.1% male.

The median home value in Clark County is $155,900 and median monthly rent is $840. 69.2% of occupied housing units are owner-occupied. The county has 61,092 total housing units, 9.4% of which are vacant.

The largest employment sector in Clark County, Ohio is professional, scientific, and management services, employing 22.9% of workers. The unemployment rate is 3.8%.

Columbus is among the largest cities associated with Clark County, Ohio, with a population of 906,480.