Hamilton County, Ohio Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 3rd-largest in Ohio

The population of Hamilton County, Ohio is 827,878 as of the 2023 American Community Survey, making it the 3rd-largest county in Ohio. The median household income is $70,816, the median home value is $225,700, and the median age is 36.9.

The population of Hamilton County has grown 4.4% since 2010 (802,295 → 837,359), a +0.31% annualized rate.

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

827,878

Population

+0.31%

Annual growth

2042

People / sq mi

$70,816

Median Income

$225,700

Median Home Value

Hamilton County covers 405 sq mi of land at 2041.9 people per square mile.

About Hamilton County, OH

Hamilton County is a county in Ohio with a population of 827,878. It ranks #3 among counties in Ohio by population. The median age is 36.9, younger than the national median. The population is 48.6% male and 51.4% female.

The median household income in Hamilton County is $70,816, below the US median of $74,580. 10.1% of residents live below the federal poverty level. Home values sit at a median of $225,700, with monthly rent averaging $1,005. The homeownership rate of 59.0% is lower than the national rate of 64.8%.

Educational attainment in Hamilton County reflects 41.4% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 13.7% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 23.3 minutes each way.

Hamilton County Population History (2010-2024)

The county of Hamilton County had a population of 802,295 in 2010 and 837,359 in 2024, a 4.4% growth over 14 years. The peak was 837,359 in 2024. Average annual growth rate: 0.31%.

837,359

Population (2024)

802,295

Population (2010)

837,359

Peak (2024)

0.31%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	802,295	-	-	estimate
2011	800,746	-1,549	-0.19%	estimate
2012	802,564	+1,818	+0.23%	estimate
2013	805,408	+2,844	+0.35%	estimate
2014	807,922	+2,514	+0.31%	estimate
2015	809,902	+1,980	+0.25%	estimate
2016	811,766	+1,864	+0.23%	estimate
2017	814,693	+2,927	+0.36%	estimate
2018	815,853	+1,160	+0.14%	estimate
2019	818,653	+2,800	+0.34%	estimate
2020	830,418	+11,765	+1.44%	estimate
2021	827,564	-2,854	-0.34%	estimate
2022	826,970	-594	-0.07%	estimate
2023	831,559	+4,589	+0.55%	estimate
2024	837,359	+5,800	+0.70%	estimate

Race & Ethnicity

White	64.3%
Black or African American	25.1%
Asian	0.0%
Hispanic or Latino (any race)	1.0%
Two or More Races	0.0%

Age & Sex

36.9

Median Age

51.4%

Female

48.6%

Male

16.2%

Age 65+

Age Distribution

Under 5

6.3%

5–9

6.2%

10–14

6.7%

15–19

6.7%

20–24

6.4%

25–34

15.0%

35–44

12.6%

45–54

11.2%

55–59

6.4%

60–64

6.3%

65–74

9.8%

75–84

4.4%

85+

2.0%

Children (under 15): 19.2% · Seniors (65+): 16.2%

Income & Poverty

Median household income	$70,816+$1,136 vs state
Mean household income	$103,444
Per-capita income	$44,328
Poverty rate	10.1%+0.9% vs state
Unemployment rate	3.3%
Employment-to-population	63.0%

Top Industries by Employment

Professional & business services

25.1%

Finance & real estate

13.8%

Manufacturing

11.6%

Education & health care

9.1%

Information

7.7%

Retail trade

6.1%

Construction

4.8%

Arts, entertainment & food

4.3%

The largest employment sector in Hamilton County is professional & business services, accounting for 25.1% of workers.

How residents commute

2.8%

Drive alone

2.6%

Carpool

71.9%

Public transit

13.7%

Work from home

23.3 min

Avg commute

Housing

$225,700+$26,500 vs state

Median home value

$1,005

Median rent

59.0%

Homeownership rate

380,414

Total housing units

92.6%

Occupied

7.4%

Vacant

41.0%

Renter-occupied

Social & access

94.2%

With health insurance

94.2%

With broadband internet

21.9%

Foreign-born

5.7%

Veterans (18+)

12.6%

With a disability

92.1%

Speak language other than English at home

Education

92.5%

High School+

41.4%

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)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)Lake County (232,101)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 →

Common questions about Hamilton County, OH

What is the population of Hamilton County, OH?What is the median household income in Hamilton County, OH?What is the median home value in Hamilton County, OH?What are the demographics of Hamilton County, OH?What is the cost of living in Hamilton County, OH?Is Hamilton County, OH growing?

Frequently Asked Questions

Hamilton County, Ohio has a population of 827,878 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 3rd-largest county in Ohio. Population density is 2042 people per square mile.

The population of Hamilton County has grown 4.4% since 2010 (802,295 → 837,359), a +0.31% annualized rate.

The median household income in Hamilton County, Ohio is $70,816, with mean (average) household income of $103,444 and per-capita income of $44,328. 10.1% of residents live below the federal poverty level.

In Hamilton County, the largest racial and ethnic groups are White (64.3%), Black or African American (25.1%), Hispanic or Latino (1.0%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in Hamilton County, Ohio is 36.9 years. Residents are 51.4% female and 48.6% male.

The median home value in Hamilton County is $225,700 and median monthly rent is $1,005. 59.0% of occupied housing units are owner-occupied. The county has 380,414 total housing units, 7.4% of which are vacant.

The largest employment sector in Hamilton County, Ohio is professional, scientific, and management services, employing 25.1% of workers. The unemployment rate is 3.3%.

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