Demographics of Fall River County, South Dakota

Fall River County, South Dakota had 7,467 people on July 1, 2025, by the Census Bureau’s estimate: +496 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.

Fall River County, in four figures

7,467
Population: July 1, 2025, Vintage 2025 estimate.; +7.1%
Change since July 2020: +496 people.; 55.3 ±1.6
Median age: ACS 2020–⁠2024.; $67,917 ±$7,389
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.

Fall River County, South Dakota's population grew 7.1% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Fall River 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

Fall River County, South Dakota's population grew 7.1% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Fall River 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	6,971	100.0	100.0
2021	7,217	103.5	100.2
2022	7,377	105.8	100.7
2023	7,374	105.8	101.6
2024	7,413	106.3	102.5
2025	7,467	107.1	103.1

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Population of Fall River 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	6,971	+3	−17	0	+21
2021	7,217	+246	−72	0	+340
2022	7,377	+160	−126	−1	+270
2023	7,374	−3	−78	0	+74
2024	7,413	+39	−76	+21	+91
2025	7,467	+54	−79	+18	+116

Age, 2020–2024

The median age is 55.3 ±1.6: for men 53.7 ±1.4 and for women 56.6 ±2.5. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Fall River County by age, ACS 2020–2024
Age	People	Share	South Dakota	United States
Under 5	304 ±82	4.2% ±1.1	6.3% ±0.1	5.6% ±<0.1
5 to 17	874 ±159	12.0% ±2.2	17.9% ±0.2	16.3% ±<0.1
18 to 24	288 ±119	4.0% ±1.6	9.3% ±0.4	9.1% ±<0.1
25 to 44	1,263 ±175	17.4% ±2.4	25.2% ±0.2	26.9% ±<0.1
45 to 64	2,147 ±224	29.6% ±3.1	23.3% ±0.2	24.8% ±<0.1
65 and over	2,382 ±257	32.8% ±3.5	18.0% ±0.3	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $67,917 ±$7,389, and income per person $39,497 ±$4,507, 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 Fall River County by income, ACS 2020–2024
Household income	Households	Share	South Dakota	United States
Under $25,000	668 ±152	18.4% ±4.1	14.0% ±0.4	14.6% ±<0.1
$25,000 to $49,999	732 ±178	20.2% ±4.8	18.5% ±0.5	16.7% ±<0.1
$50,000 to $74,999	548 ±156	15.1% ±4.3	17.4% ±0.4	15.5% ±<0.1
$75,000 to $99,999	610 ±157	16.8% ±4.3	14.6% ±0.4	12.6% ±<0.1
$100,000 to $149,999	782 ±172	21.5% ±4.7	18.9% ±0.5	17.5% ±<0.1
$150,000 to $199,999	65 to 259	1.8% to 7.1%	8.5% ±0.3	9.6% ±<0.1
$200,000 or more	61 to 199	1.7% to 5.5%	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 Fall River County by age, ACS 2020–2024
Age	Below poverty	Rate	South Dakota	United States
All ages	1,160 ±238	16.6% ±3.4	11.9% ±0.4	12.5% ±0.1
Under 18	319 ±93	27.1% ±6.7	14.3% ±0.6	16.1% ±0.1
18 to 59	560 ±148	19.1% ±4.8	11.8% ±0.5	11.6% ±0.1
60 and over	281 ±95	9.7% ±3.2	9.7% ±0.4	11.0% ±<0.1

Housing, 2020–2024

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Housing in Fall River County, ACS 2020–2024
Measure	Fall River County	South Dakota	United States
Housing units	4,093 ±35	408,584 ±422	143,775,355 ±10,234
Occupied	88.7% ±3.1	89.5% ±0.4	89.9% ±0.1
Vacant	11.3% ±3.1	10.5% ±0.4	10.1% ±0.1
Owner occupied	72.4% ±4.8	68.6% ±0.5	65.2% ±0.3
Renter occupied	27.6% ±4.9	31.4% ±0.5	34.8% ±0.1
Median home value	$193,200 ±$18,936	$257,400 ±$3,051	$332,700 ±$236
Median gross rent	$931 ±$137	$946 ±$11	$1,413 ±$2
Median year built	1972 ±3	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 Fall River County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	South Dakota	United States
Hispanic or Latino	249 ±0	3.4% ±<0.1	4.8% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	6,088 ±72	83.9% ±1.0	79.8% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	0 to 15	0% to 0.2%	2.1% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	140 ±20	1.9% ±0.3	1.4% ±0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	372 ±131	5.1% ±1.8	7.1% ±0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 111	0% to 1.5%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 42	0% to 0.6%	0.3% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	342 ±147	4.7% ±2.0	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 Fall River County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	South Dakota	United States
Born in the state	3,152 ±322	43.4% ±4.4	62.4% ±0.4	57.3% ±<0.1
Born in another state	3,865 ±315	53.3% ±4.3	32.9% ±0.4	26.9% ±<0.1
Born a citizen outside the states	0 to 94	0% to 1.3%	0.7% ±0.1	1.7% ±<0.1
Born abroad	195 ±49	2.7% ±0.7	4.0% ±0.2	14.1% ±<0.1
Naturalized citizens	11 to 103	0.2% to 1.4%	1.7% ±0.1	7.4% ±<0.1
Not citizens	138 ±48	1.9% ±0.7	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%.

Fall River County among the counties of South Dakota

24th of 66 by population, July 2025. Every one is listed on the South Dakota page.

Counties of South Dakota near Fall River County in population, July 2025
County	July 2025	Change since 2020
Custer County	9,431	+13.2%
Turner County	9,314	+7.3%
Charles Mix County	9,303	−0.5%
Todd County	8,863	−4.9%
Grant County	7,534	> −0.1%
Fall River County	7,467	+7.1%
Hutchinson County	7,413	−0.1%
Bon Homme County	7,244	+3.8%
Hamlin County	6,900	+11.8%
Moody County	6,632	+4.5%
Spink County	6,155	−3.0%

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