City · South Dakota
Marion, South Dakota
Marion, city, in Turner County, South Dakota. Marion had 895 residents on July 1, 2025 by the Census Bureau's estimate, up 5.5% since 2020; the 2020 Census counted 849 and the ACS 2020-2024 5-year estimates put it at 981 (±159). GEOID 4640860.
Residents, July 2025 estimate
895
Census Bureau estimate (no margin published)
2020 Census count: 849 · ACS 2020-2024: 981 ±159
Median household income
$67,750
±$15,887 (90% margin)
South Dakota: $75,081
Median home value
$164,500
±$28,895 (90% margin)
South Dakota: $257,400
Median gross rent
$813
±$79 (90% margin)
South Dakota: $946
Where is Marion and what county is it in?
Marion is a city in Turner County, South Dakota. It covers 0.9 square miles of land, 978 residents per square mile in 2020.
Marion is in the Sioux Falls, SD-MN metropolitan statistical area, which takes in 5 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Marion, and is it growing?
The Census Bureau estimates that 895 people lived in Marion on July 1, 2025, up 5.5% since 2020, in line with South Dakota (+5.5%). The 2020 Census counted 849 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 981 (±159).
| Measure | Marion | Turner County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 981 ±159 | 8,882 | no clear change |
| Households | 399 ±64 | 3,568 | no clear change |
| Average household size | 2.29 ±0.24 | 2.42 | no clear change |
| Housing units | 432 ±68 | 3,913 | no clear change |
Marion's population since 2000
From 892 in 2000 to 895 in 2025: up 0.3%. The 2000, 2010 and 2020 figures are census counts, each for Marion as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Marion?
The median resident of Marion is 51.7 years old; 21.1% are under 18 and 33.6% are 65 or older. The largest group is non-Hispanic white residents at 93.1%, then non-Hispanic residents of two or more races at 4.5%.
| Measure | Marion | Turner County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 51.7 ±9.3 | 41.2 | no clear change |
| Under 18 years | 21.1% ±4.8 pts | 25.3% | – |
| 65 years and over | 33.6% ±7.2 pts | 20.3% | – |
| Male | 49.4% ±4.4 pts | 50.2% | – |
| Hispanic or Latino (any race) | 1.2% ±1.5 pts | 3.5% | – |
| White alone, not Hispanic | 93.1% ±4.2 pts | 93.0% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±2.5 pts | 0.4% | – |
| Asian alone, not Hispanic | 0.0% ±2.5 pts | 0.3% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±2.5 pts | 0.5% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 1.2% ±1.4 pts | 0.1% | – |
| Two or more races, not Hispanic | 4.5% ±3.7 pts | 2.0% | – |
| Some other race alone, not Hispanic | 0.0% ±2.5 pts | 0.0% | – |
| Born outside the United States | 0.2% ±0.3 pts | 2.0% | – |
| Speak a language other than English at home (age 5+) | 1.7% ±1.3 pts | 3.8% | – |
| Civilian veterans (age 18+) | 10.5% ±3.6 pts | 8.4% | – |
| With a disability | 15.6% ±5.3 pts | 11.1% | – |
| No health insurance coverage | 7.7% ±3.5 pts | 7.0% | no clear change |
| High school graduate or higher (age 25+) | 89.5% ±5.4 pts | 93.0% | – |
| Bachelor's degree or higher (age 25+) | 18.8% ±6.6 pts | 27.3% | no clear change |
| Graduate or professional degree (age 25+) | 4.0% ±2.8 pts | 7.1% | – |
| Lived in the same house a year earlier | 79.8% ±8.4 pts | 90.9% | – |
| Moved from another state in the past year | 3.9% ±3.1 pts | 1.9% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Marion earn?
Half of Marion's 399 households earn less than $67,750 a year (±$15,887), against $75,771 in Turner County and $75,081 in South Dakota. In 2015-2019 it was $61,735 in 2024 dollars; the margins of error cannot tell the two periods apart. 10.8% of residents live below the poverty line.
| Measure | Marion | Turner County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $67,750 ±$15,887 | $75,771 | no clear change |
| Mean household income | $84,142 ±$12,118 | $90,459 | – |
| Per capita income | $36,121 ±$4,932 | $36,868 | no clear change |
| People below the poverty line | 10.8% ±5.3 pts | 9.3% | no clear change |
| Children under 18 below the poverty line | 11.3% ±9.0 pts | 10.1% | – |
| Households receiving SNAP | 6.5% ±4.0 pts | 8.5% | – |
| Households with a computer | 90.0% ±4.3 pts | 92.6% | – |
| Households with a broadband subscription | 86.5% ±4.4 pts | 88.2% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Marion?
Owners occupy 75.9% of Marion's occupied homes and renters 24.1%. The median owner-occupied home is valued at $164,500 by its owner (±$28,895). The median renter pays $813 a month including utilities, and 31.8% of renters pay 35% or more of their income on rent.
| Measure | Marion | Turner County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $164,500 ±$28,895 | $222,900 | +$66,906 |
| Median gross rent | $813 ±$79 | $742 | no clear change |
| Renters paying 35% or more of income on rent | 31.8% ±14.3 pts | 28.1% | −26.8 pts |
| Median monthly owner costs, with a mortgage | $1,243 ±$198 | $1,553 | – |
| Owner-occupied homes | 75.9% ±7.1 pts | 79.0% | no clear change |
| Renter-occupied homes | 24.1% ±7.1 pts | 21.0% | – |
| Housing units | 432 ±68 | 3,913 | no clear change |
| Homeowner vacancy rate | 0.0% ±7.5 pts | 0.1% | – |
| Rental vacancy rate | 5.0% ±9.3 pts | 5.9% | – |
| Single-family detached homes | 78.9% ±6.0 pts | 85.4% | – |
| Mobile homes | 3.9% ±3.4 pts | 4.1% | – |
| Built 2020 or later | 0.7% ±0.9 pts | 1.2% | – |
| Built 2010 to 2019 | 6.7% ±3.4 pts | 7.5% | – |
| Built 1939 or earlier | 22.5% ±6.9 pts | 36.5% | – |
| Households with no vehicle | 4.3% ±2.4 pts | 3.9% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Marion building?
Builders took permits for 0 new housing units in Marion in 2025 (0 in single-family houses), 0.0 per 1,000 residents against 5.7 across South Dakota.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Marion work and get to work?
78.6% of Marion's workers drive alone. The average trip to work takes 21.9 minutes.
| Measure | Marion | Turner County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 59.5% ±7.0 pts | 69.1% | – |
| Unemployment rate | 0.2% ±0.5 pts | 2.2% | – |
| Drove alone to work | 78.6% ±6.7 pts | 80.1% | – |
| Carpooled | 15.7% ±6.5 pts | 8.1% | – |
| Public transportation | 0.0% ±5.2 pts | 0.4% | – |
| Walked | 3.2% ±2.5 pts | 3.5% | – |
| Worked from home | 2.3% ±1.7 pts | 7.0% | – |
| Mean travel time to work | 21.9 min ±3.9 | 25.3 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Marion?
No census tract lies mostly in Marion; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9651Turner County | 4,577 | $77,500 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Marion) · Census block assignment files
How does Marion compare with other places in South Dakota?
By the Census Bureau's July 2025 estimates, Marion is the 10,758th-most populous of the 19,476 U.S. incorporated places that have one and the 72nd-most populous of 310 in South Dakota.
Marion is not ranked by income or the other survey measures: those rankings include places of 1,000 or more residents (2020 Census) with a reliable estimate.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 72nd | 310 |
Marion's figures with every place in South Dakota (CSV)
Every place in South Dakota, sortable · Compare Marion with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Marion?
20 of the 57 figures for Marion on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Marion are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Marion.