Delaware County, Ohio Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 13th-largest in Ohio

The population of Delaware County, Ohio is 221,160 as of the 2023 American Community Survey, making it the 13th-largest county in Ohio. The median household income is $130,088, the median home value is $419,500, and the median age is 39.9.

The population of Delaware County has grown 35.9% since 2010 (175,114 → 237,966), a +2.21% annualized rate.

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

221,160

Population

+2.21%

Annual growth

499

People / sq mi

$130,088

Median Income

$419,500

Median Home Value

Delaware County covers 443 sq mi of land at 499.1 people per square mile.

About Delaware County, OH

Among US counties, Delaware County stands out first on household income: a median of $130,088, above the US median of $78,538. With 221,160 residents, Delaware County is a county in Ohio. It ranks #13 among counties in Ohio by population.

Households here are among the highest-earning of all US counties: median income is $130,088, above the US median of $78,538. Very few residents live in poverty — 3.4%, below the national 12.4%. Housing is expensive: the median home is worth $419,500, with typical rent around $1,433.

The population is unusually well-credentialed for US counties — 58.0% of adults have a four-year degree, above the national 35.0%. An unusually large 23.7% of workers are remote, above the national 14.0%, and the average commute runs about 26 minutes each way.

Taken together, the income and housing figures place Delaware County firmly in the higher-cost, higher-earning tier of US counties — a profile that tends to track dense job markets and competitive housing.

Delaware County Population History (2010-2024)

The county of Delaware County had a population of 175,114 in 2010 and 237,966 in 2024, a 35.9% growth over 14 years. The peak was 237,966 in 2024. Average annual growth rate: 2.22%.

Delaware County population, 2010–2024 · Source: U.S. Census Bureau — decennial census & Population Estimates

237,966

Population (2024)

175,114

Population (2010)

237,966

Peak (2024)

2.22%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	175,114	-	-	estimate
2011	178,584	+3,470	+1.98%	estimate
2012	181,234	+2,650	+1.48%	estimate
2013	185,545	+4,311	+2.38%	estimate
2014	189,649	+4,104	+2.21%	estimate
2015	193,624	+3,975	+2.10%	estimate
2016	197,442	+3,818	+1.97%	estimate
2017	201,157	+3,715	+1.88%	estimate
2018	205,347	+4,190	+2.08%	estimate
2019	209,768	+4,421	+2.15%	estimate
2020	215,162	+5,394	+2.57%	estimate
2021	221,304	+6,142	+2.85%	estimate
2022	227,008	+5,704	+2.58%	estimate
2023	232,732	+5,724	+2.52%	estimate
2024	237,966	+5,234	+2.25%	estimate

Race & Ethnicity

White	81.4%
Black or African American	4.2%
Asian	0.0%
Hispanic or Latino (any race)	0.7%
Two or More Races	0.0%

Age & Sex

39.9

Median Age

50.0%

Female

50.0%

Male

14.7%

Age 65+

Age Distribution

Under 5

5.7%

5–9

6.9%

10–14

7.8%

15–19

7.5%

20–24

5.5%

25–34

9.6%

35–44

15.3%

45–54

15.0%

55–59

6.6%

60–64

5.4%

65–74

9.2%

75–84

4.0%

85+

1.5%

Children (under 15): 20.4% · Seniors (65+): 14.7%

Income & Poverty

Median household income	$130,088+$60,408 vs state
Mean household income	$161,060
Per-capita income	$59,581
Poverty rate	3.4%-5.8% vs state
Unemployment rate	2.1%
Employment-to-population	68.1%

Top Industries by Employment

Professional & business services

24.9%

Finance & real estate

14.6%

Information

12.8%

Manufacturing

9.6%

Education & health care

7.5%

Public administration

4.3%

Construction

4.2%

Retail trade

4.1%

The largest employment sector in Delaware County is professional & business services, accounting for 24.9% of workers.

How residents commute

0.2%

Drive alone

1.0%

Carpool

70.1%

Public transit

23.7%

Work from home

25.7 min

Avg commute

Housing

$419,500+$220,300 vs state

Median home value

$1,433

Median rent

78.2%

Homeownership rate

84,215

Total housing units

95.5%

Occupied

4.5%

Vacant

21.8%

Renter-occupied

Social & access

95.5%

With health insurance

97.9%

With broadband internet

23.0%

Foreign-born

6.0%

Veterans (18+)

8.2%

With a disability

89.6%

Speak language other than English at home

Education

97.1%

High School+

58.0%

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

Delaware County, Ohio has a population of 221,160 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 13th-largest county in Ohio. Population density is 499 people per square mile.

The population of Delaware County has grown 35.9% since 2010 (175,114 → 237,966), a +2.21% annualized rate.

The median household income in Delaware County, Ohio is $130,088, with mean (average) household income of $161,060 and per-capita income of $59,581. 3.4% of residents live below the federal poverty level.

In Delaware County, the largest racial and ethnic groups are White (81.4%), Black or African American (4.2%), Hispanic or Latino (0.7%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in Delaware County, Ohio is 39.9 years. Residents are 50.0% female and 50.0% male.

The median home value in Delaware County is $419,500 and median monthly rent is $1,433. 78.2% of occupied housing units are owner-occupied. The county has 84,215 total housing units, 4.5% of which are vacant.

The largest employment sector in Delaware County, Ohio is professional, scientific, and management services, employing 24.9% of workers. The unemployment rate is 2.1%.

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