Delta County, Michigan Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 43rd-largest in Michigan

The population of Delta County, Michigan is 36,829 as of the 2023 American Community Survey, making it the 43rd-largest county in Michigan. The median household income is $54,829, the median home value is $146,800, and the median age is 47.8.

The population of Delta County has declined 1.0% since 2010 (37,049 → 36,687), a -0.07% annualized rate.

Delta County within Michigan · Source: US Census TIGER/Line via us-atlas

36,829

Population

-0.07%

Annual growth

People / sq mi

$54,829

Median Income

$146,800

Median Home Value

Delta County covers 1,171 sq mi of land at 31.4 people per square mile.

About Delta County, MI

Age is the most distinctive thing about Delta County: a median age of 47.8, older than the national median. Delta County is a county in Michigan with a population of 36,829. It ranks #43 among counties in Michigan by population.

Earnings trail the nation, with the median household making $54,829, below the US median of $78,538. Poverty runs at 9.5%, below the national 12.4%. The typical home is valued at $146,800, with typical rent around $698.

Degree attainment is mid-range for US counties: 20.0% of adults hold a four-year degree, below the national 35.0%. Remote work is on the lower side here, at 5.5%, below the national 14.0%, and the average commute runs about 19 minutes each way.

The age structure shapes everything downstream in Delta County — from housing demand to the mix of working-age earners reflected in the income figures above.

Delta County Population History (2010-2024)

The county of Delta County had a population of 37,049 in 2010 and 36,687 in 2024, a -1.0% growth over 14 years. The peak was 37,049 in 2010. Average annual growth rate: -0.07%.

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

36,687

Population (2024)

37,049

Population (2010)

37,049

Peak (2010)

-0.07%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	37,049	-	-	estimate
2011	36,946	-103	-0.28%	estimate
2012	36,840	-106	-0.29%	estimate
2013	36,806	-34	-0.09%	estimate
2014	36,592	-214	-0.58%	estimate
2015	36,431	-161	-0.44%	estimate
2016	36,217	-214	-0.59%	estimate
2017	35,911	-306	-0.84%	estimate
2018	35,887	-24	-0.07%	estimate
2019	35,744	-143	-0.40%	estimate
2020	36,874	+1,130	+3.16%	estimate
2021	36,838	-36	-0.10%	estimate
2022	36,818	-20	-0.05%	estimate
2023	36,846	+28	+0.08%	estimate
2024	36,687	-159	-0.43%	estimate

Race & Ethnicity

White	90.7%
Black or African American	0.3%
Asian	0.0%
Hispanic or Latino (any race)	4.3%
Two or More Races	0.0%

Age & Sex

47.8

Median Age

49.6%

Female

50.4%

Male

25.6%

Age 65+

Age Distribution

Under 5

4.7%

5–9

4.6%

10–14

6.2%

15–19

5.7%

20–24

4.8%

25–34

9.7%

35–44

11.1%

45–54

11.9%

55–59

6.0%

60–64

9.7%

65–74

15.5%

75–84

7.1%

85+

3.0%

Children (under 15): 15.5% · Seniors (65+): 25.6%

Income & Poverty

Median household income	$54,829$-16,320 vs state
Mean household income	$77,286
Per-capita income	$34,716
Poverty rate	9.5%+0.7% vs state
Unemployment rate	2.6%
Employment-to-population	48.6%

Top Industries by Employment

Professional & business services

20.4%

Manufacturing

16.8%

Education & health care

11.7%

Construction

6.7%

Information

6.3%

Retail trade

5.7%

Public administration

5.2%

Arts, entertainment & food

4.8%

The largest employment sector in Delta County is professional & business services, accounting for 20.4% of workers.

How residents commute

0.5%

Drive alone

2.3%

Carpool

80.8%

Public transit

5.5%

Work from home

18.5 min

Avg commute

Housing

$146,800$-70,800 vs state

Median home value

$698

Median rent

78.6%

Homeownership rate

19,841

Total housing units

80.1%

Occupied

19.9%

Vacant

21.4%

Renter-occupied

Social & access

94.3%

With health insurance

90.4%

With broadband internet

18.8%

Foreign-born

10.5%

Veterans (18+)

17.7%

With a disability

98.7%

Speak language other than English at home

Education

92.4%

High School+

20.0%

Bachelor's+

Largest cities in Michigan

Detroit (636,644)Grand Rapids (197,768)Warren (138,128)Sterling Heights (133,473)Ann Arbor (121,179)Lansing (112,546)Dearborn (107,846)Livonia (94,058)Troy (87,307)Westland (84,155)All Michigan cities →

Other counties in Michigan

Wayne County (1,773,767)Oakland County (1,272,294)Macomb County (877,624)Kent County (658,844)Genesee County (404,087)Washtenaw County (368,394)Ottawa County (298,614)Ingham County (282,015)Kalamazoo County (261,437)Livingston County (195,143)All Michigan counties →

Part of Michigan

Michigan demographic profile All Michigan data →

Metro areas in Michigan

Detroit (4,367,620)Grand Rapids (1,154,320)Lansing (470,434)Flint (404,087)Ann Arbor (368,394)South Bend (324,180)Kalamazoo (261,437)Saginaw (189,210)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

Delta County, Michigan has a population of 36,829 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 43rd-largest county in Michigan. Population density is 31 people per square mile.

The population of Delta County has declined 1.0% since 2010 (37,049 → 36,687), a -0.07% annualized rate.

The median household income in Delta County, Michigan is $54,829, with mean (average) household income of $77,286 and per-capita income of $34,716. 9.5% of residents live below the federal poverty level.

In Delta County, the largest racial and ethnic groups are White (90.7%), Hispanic or Latino (4.3%), Black or African American (0.3%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in Delta County, Michigan is 47.8 years. Residents are 49.6% female and 50.4% male.

The median home value in Delta County is $146,800 and median monthly rent is $698. 78.6% of occupied housing units are owner-occupied. The county has 19,841 total housing units, 19.9% of which are vacant.

The largest employment sector in Delta County, Michigan is professional, scientific, and management services, employing 20.4% of workers. The unemployment rate is 2.6%.

Detroit is among the largest cities associated with Delta County, Michigan, with a population of 636,644.