Demographics of Ziebach County, South Dakota

Ziebach County, South Dakota had 2,389 people on July 1, 2025, by the Census Bureau’s estimate: −2 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.

Ziebach County, in four figures

2,389
Population: July 1, 2025, Vintage 2025 estimate.; −0.1%
Change since July 2020: −2 people.; 36.7 ±1.2
Median age: ACS 2020–⁠2024.; $53,958 ±$11,479
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.

Ziebach County, South Dakota's population shrank 0.1% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Ziebach County, South Dakota'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

Ziebach County, South Dakota's population shrank 0.1% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Ziebach County, South Dakota'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	2,391	100.0	100.0
2021	2,380	99.5	100.2
2022	2,379	99.5	100.7
2023	2,355	98.5	101.6
2024	2,381	99.6	102.5
2025	2,389	99.9	103.1

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Population of Ziebach County, South Dakota on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	2,391	−22	+9	0	−28
2021	2,380	−11	−18	0	+6
2022	2,379	−1	−2	+1	+2
2023	2,355	−24	+64	0	−89
2024	2,381	+26	+7	0	+18
2025	2,389	+8	+10	0	−1

Age, 2020–2024

The median age is 36.7 ±1.2: for men 38.3 ±2.1 and for women 36.1 ±6.4. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Ziebach County by age, ACS 2020–2024
Age	People	Share	South Dakota	United States
Under 5	187 ±48	7.9% ±2.0	6.3% ±0.1	5.6% ±<0.1
5 to 17	413 ±48	17.4% ±2.0	17.9% ±0.2	16.3% ±<0.1
18 to 24	306 ±63	12.9% ±2.6	9.3% ±0.4	9.1% ±<0.1
25 to 44	528 ±75	22.2% ±3.2	25.2% ±0.2	26.9% ±<0.1
45 to 64	664 ±80	27.9% ±3.3	23.3% ±0.2	24.8% ±<0.1
65 and over	279 ±58	11.7% ±2.4	18.0% ±0.3	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $53,958 ±$11,479, and income per person $26,885 ±$3,348, in 2024 dollars. The median is $75,081 ±$888 in South Dakota and $80,734 ±$166 in the United States.

Households by income

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Households in Ziebach County by income, ACS 2020–2024
Household income	Households	Share	South Dakota	United States
Under $25,000	207 ±47	28.2% ±6.3	14.0% ±0.4	14.6% ±<0.1
$25,000 to $49,999	148 ±38	20.1% ±5.1	18.5% ±0.5	16.7% ±<0.1
$50,000 to $74,999	108 ±33	14.7% ±4.5	17.4% ±0.4	15.5% ±<0.1
$75,000 to $99,999	105 ±36	14.3% ±4.9	14.6% ±0.4	12.6% ±<0.1
$100,000 to $149,999	55 ±24	7.5% ±3.2	18.9% ±0.5	17.5% ±<0.1
$150,000 to $199,999	4 to 42	0.5% to 5.7%	8.5% ±0.3	9.6% ±<0.1
$200,000 or more	89 ±35	12.1% ±4.7	8.1% ±0.4	13.4% ±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%.

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 Ziebach County by age, ACS 2020–2024
Age	Below poverty	Rate	South Dakota	United States
All ages	796 ±139	33.5% ±5.8	11.9% ±0.4	12.5% ±0.1
Under 18	294 ±43	49.0% ±3.1	14.3% ±0.6	16.1% ±0.1
18 to 59	412 ±91	31.3% ±6.1	11.8% ±0.5	11.6% ±0.1
60 and over	90 ±36	19.6% ±7.3	9.7% ±0.4	11.0% ±<0.1

Housing, 2020–2024

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Housing in Ziebach County, ACS 2020–2024
Measure	Ziebach County	South Dakota	United States
Housing units	885 ±11	408,584 ±422	143,775,355 ±10,234
Occupied	83.1% ±2.8	89.5% ±0.4	89.9% ±0.1
Vacant	16.9% ±2.9	10.5% ±0.4	10.1% ±0.1
Owner occupied	57.1% ±5.3	68.6% ±0.5	65.2% ±0.3
Renter occupied	42.9% ±4.9	31.4% ±0.5	34.8% ±0.1
Median home value	$99,600 ±$14,674	$257,400 ±$3,051	$332,700 ±$236
Median gross rent	$734 ±$76	$946 ±$11	$1,413 ±$2
Median year built	1987 ±6	1980 ±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 Ziebach County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	South Dakota	United States
Hispanic or Latino	35 ±0	1.5% ±<0.1	4.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	644 ±3	27.1% ±0.1	79.8% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	0 to 10	0% to 0.4%	2.1% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	0 to 10	0% to 0.4%	1.4% ±0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	1,646 ±35	69.2% ±1.5	7.1% ±0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 18	0% to 0.8%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 10	0% to 0.4%	0.3% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	13 to 77	0.5% to 3.2%	4.4% ±0.2	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 Ziebach County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	South Dakota	United States
Born in the state	2,136 ±43	89.9% ±1.8	62.4% ±0.4	57.3% ±<0.1
Born in another state	232 ±44	9.8% ±1.9	32.9% ±0.4	26.9% ±<0.1
Born a citizen outside the states	0 to 10	0% to 0.4%	0.7% ±0.1	1.7% ±<0.1
Born abroad	0 to 20	0% to 0.8%	4.0% ±0.2	14.1% ±<0.1
Naturalized citizens	0 to 10	0% to 0.4%	1.7% ±0.1	7.4% ±<0.1
Not citizens	0 to 20	0% to 0.8%	2.3% ±0.2	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%.

Ziebach County among the counties of South Dakota

52nd of 66 by population, July 2025. Every one is listed on the South Dakota page.

Counties of South Dakota near Ziebach County in population, July 2025
County	July 2025	Change since 2020
Stanley County	3,018	+1.8%
Douglas County	2,888	+1.9%
Perkins County	2,853	+0.8%
Aurora County	2,801	+2.6%
Jackson County	2,666	−4.8%
Ziebach County	2,389	−0.1%
Sanborn County	2,388	+2.5%
Potter County	2,377	−3.8%
McPherson County	2,347	−2.2%
Miner County	2,281	−0.8%
Faulk County	2,178	+2.3%

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