Demographics of Delta County, Michigan

Delta County, Michigan had 36,582 people on July 1, 2025, by the Census Bureau’s estimate: −295 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Delta County, in four figures

36,582
Population: July 1, 2025, Vintage 2025 estimate.; −0.8%
Change since July 2020: −295 people.; 48.0 ±0.3
Median age: ACS 2020–⁠2024.; $57,809 ±$3,201
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Delta County, Michigan's population shrank 0.8% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Delta County, Michigan's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Delta County, Michigan's population shrank 0.8% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Delta County, Michigan's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	36,877	100.0	100.0
2021	36,839	99.9	100.2
2022	36,814	99.8	100.7
2023	36,820	99.8	101.6
2024	36,713	99.6	102.5
2025	36,582	99.2	103.1

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Population of Delta County, Michigan on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	36,877	−31	−40	0	0
2021	36,839	−38	−277	0	+223
2022	36,814	−25	−203	−4	+193
2023	36,820	+6	−216	+6	+220
2024	36,713	−107	−213	+30	+83
2025	36,582	−131	−221	+16	+75

Age, 2020–2024

The median age is 48.0 ±0.3: for men 46.3 ±0.9 and for women 49.5 ±0.4. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Delta County by age, ACS 2020–2024
Age	People	Share	Michigan	United States
Under 5	1,641 ±62	4.5% ±0.2	5.4% ±<0.1	5.6% ±<0.1
5 to 17	5,396 ±307	14.7% ±0.8	15.9% ±0.1	16.3% ±<0.1
18 to 24	2,459 ±210	6.7% ±0.6	9.2% ±0.1	9.1% ±<0.1
25 to 44	7,698 ±321	20.9% ±0.9	25.3% ±0.1	26.9% ±<0.1
45 to 64	9,961 ±445	27.1% ±1.2	25.6% ±0.1	24.8% ±<0.1
65 and over	9,658 ±449	26.2% ±1.2	18.6% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $57,809 ±$3,201, and income per person $36,649 ±$2,533, in 2024 dollars. The median is $72,875 ±$293 in Michigan and $80,734 ±$166 in the United States.

Households by income

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Households in Delta County by income, ACS 2020–2024
Household income	Households	Share	Michigan	United States
Under $25,000	3,115 ±334	19.5% ±2.1	15.8% ±0.1	14.6% ±<0.1
$25,000 to $49,999	3,509 ±369	22.0% ±2.3	18.7% ±0.2	16.7% ±<0.1
$50,000 to $74,999	3,307 ±375	20.7% ±2.3	16.8% ±0.1	15.5% ±<0.1
$75,000 to $99,999	1,965 ±241	12.3% ±1.5	13.2% ±0.1	12.6% ±<0.1
$100,000 to $149,999	2,396 ±281	15.0% ±1.7	17.3% ±0.2	17.5% ±<0.1
$150,000 to $199,999	847 ±180	5.3% ±1.1	8.6% ±0.1	9.6% ±<0.1
$200,000 or more	832 ±171	5.2% ±1.1	9.5% ±0.1	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Delta County by age, ACS 2020–2024
Age	Below poverty	Rate	Michigan	United States
All ages	4,579 ±573	12.7% ±1.6	13.2% ±0.2	12.5% ±0.1
Under 18	1,024 ±205	14.8% ±2.8	17.6% ±0.3	16.1% ±0.1
18 to 59	1,792 ±286	11.0% ±1.7	12.7% ±0.2	11.6% ±0.1
60 and over	1,763 ±275	13.7% ±2.1	10.5% ±0.1	11.0% ±<0.1

Housing, 2020–2024

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Housing in Delta County, ACS 2020–2024
Measure	Delta County	Michigan	United States
Housing units	19,845 ±38	4,622,236 ±795	143,775,355 ±10,234
Occupied	80.5% ±1.6	88.2% ±0.2	89.9% ±0.1
Vacant	19.5% ±1.6	11.8% ±0.2	10.1% ±0.1
Owner occupied	82.0% ±1.6	73.2% ±0.3	65.2% ±0.3
Renter occupied	18.0% ±1.8	26.8% ±0.2	34.8% ±0.1
Median home value	$157,100 ±$4,589	$231,600 ±$642	$332,700 ±$236
Median gross rent	$692 ±$91	$1,129 ±$4	$1,413 ±$2
Median year built	1970 ±2	1972 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Delta County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Michigan	United States
Hispanic or Latino	560 ±0	1.5% ±<0.1	5.9% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	33,107 ±405	89.9% ±1.1	72.4% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	25 to 113	0.1% to 0.3%	13.1% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	176 ±59	0.5% ±0.2	3.4% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	560 ±114	1.5% ±0.3	0.3% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 3	0% to < 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	28 to 142	0.1% to 0.4%	0.5% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	2,255 ±442	6.1% ±1.2	4.5% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Delta County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Michigan	United States
Born in the state	29,593 ±678	80.4% ±1.8	76.0% ±0.1	57.3% ±<0.1
Born in another state	6,770 ±660	18.4% ±1.8	16.0% ±0.1	26.9% ±<0.1
Born a citizen outside the states	96 ±47	0.3% ±0.1	0.9% ±<0.1	1.7% ±<0.1
Born abroad	354 ±86	1.0% ±0.2	7.2% ±0.1	14.1% ±<0.1
Naturalized citizens	195 ±59	0.5% ±0.2	4.1% ±0.1	7.4% ±<0.1
Not citizens	71 to 247	0.2% to 0.7%	3.1% ±0.1	6.8% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Delta County among the counties of Michigan

43rd of 83 by population, July 2025. Every one is listed on the Michigan page.

Counties of Michigan near Delta County in population, July 2025
County	July 2025	Change since 2020
Hillsdale County	45,738	> −0.1%
Mecosta County	42,320	+4.7%
Gratiot County	41,190	−1.1%
Sanilac County	40,083	−1.0%
Houghton County	37,842	+1.6%
Delta County	36,582	−0.8%
Chippewa County	36,081	−1.9%
Wexford County	34,445	+2.3%
Emmet County	33,775	−1.0%
Clare County	31,543	+2.3%
Huron County	30,530	−2.7%

Elsewhere on the site

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Data retrieved September 25, 2026