City · South Dakota
Martin, South Dakota
Martin, city, in Bennett County, South Dakota. Martin had 930 residents on July 1, 2025 by the Census Bureau's estimate, down 1.3% since 2020; the 2020 Census counted 938 and the ACS 2020-2024 5-year estimates put it at 947 (±238). GEOID 4641100.
Residents, July 2025 estimate
930
Census Bureau estimate (no margin published)
2020 Census count: 938 · ACS 2020-2024: 947 ±238
Median household income
$54,063
±$22,923 (90% margin)
South Dakota: $75,081
Median home value
$103,900
±$26,844 (90% margin)
South Dakota: $257,400
Median gross rent
$638
±$298 (90% margin)
South Dakota: $946
Where is Martin and what county is it in?
Martin is a city in Bennett County, South Dakota. It covers 0.6 square miles of land, 1,675 residents per square mile in 2020.
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Martin, and is it growing?
The Census Bureau estimates that 930 people lived in Martin on July 1, 2025, down 1.3% since 2020, while South Dakota grew 5.5%. The 2020 Census counted 938 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 947 (±238).
| Measure | Martin | Bennett County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 947 ±238 | 3,345 | no clear change |
| Households | 313 ±77 | 920 | no clear change |
| Average household size | 2.89 ±0.38 | 3.59 | no clear change |
| Housing units | 398 ±79 | 1,151 | no clear change |
Martin's population since 2000
From 1,106 in 2000 to 930 in 2025: down 15.9%. The 2000, 2010 and 2020 figures are census counts, each for Martin 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 Martin?
The median resident of Martin is 34.3 years old; 33.8% are under 18 and 15.5% are 65 or older. The largest group is non-Hispanic American Indian and Alaska Native residents at 43.0%, then non-Hispanic white residents at 41.5%.
| Measure | Martin | Bennett County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 34.3 ±6.3 | 27.4 | no clear change |
| Under 18 years | 33.8% ±6.4 pts | 35.1% | – |
| 65 years and over | 15.5% ±4.7 pts | 15.3% | – |
| Male | 37.4% ±5.9 pts | 48.4% | – |
| Hispanic or Latino (any race) | 7.1% ±6.8 pts | 5.1% | – |
| White alone, not Hispanic | 41.5% ±9.7 pts | 34.3% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±2.6 pts | 0.2% | – |
| Asian alone, not Hispanic | 5.2% ±4.9 pts | 1.5% | – |
| American Indian and Alaska Native alone, not Hispanic | 43.0% ±10.6 pts | 56.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±2.6 pts | 0.0% | – |
| Two or more races, not Hispanic | 3.3% ±4.5 pts | 2.9% | – |
| Some other race alone, not Hispanic | 0.0% ±2.6 pts | 0.0% | – |
| Born outside the United States | 3.4% ±3.7 pts | 1.6% | – |
| Speak a language other than English at home (age 5+) | 4.7% ±3.1 pts | 12.0% | – |
| Civilian veterans (age 18+) | 9.1% ±5.7 pts | 7.2% | – |
| With a disability | 9.6% ±4.7 pts | 8.9% | – |
| No health insurance coverage | 34.5% ±11.9 pts | 27.7% | +16.9 pts |
| High school graduate or higher (age 25+) | 93.8% ±5.6 pts | 86.3% | – |
| Bachelor's degree or higher (age 25+) | 37.5% ±9.2 pts | 18.3% | +16.5 pts |
| Graduate or professional degree (age 25+) | 8.8% ±5.3 pts | 3.3% | – |
| Lived in the same house a year earlier | 96.7% ±3.5 pts | 98.4% | – |
| Moved from another state in the past year | 0.0% ±2.6 pts | 0.0% | – |
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 Martin earn?
Half of Martin's 313 households earn less than $54,063 a year (±$22,923), against $53,750 in Bennett County and $75,081 in South Dakota. In 2015-2019 it was $53,228 in 2024 dollars; the margins of error cannot tell the two periods apart. 17.5% of residents live below the poverty line.
| Measure | Martin | Bennett County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $54,063 ±$22,923 | $53,750 | no clear change |
| Mean household income | $66,854 ±$10,315 | $59,835 | – |
| Per capita income | $28,499 ±$5,790 | $18,895 | no clear change |
| People below the poverty line | 17.5% ±8.5 pts | 29.9% | no clear change |
| Children under 18 below the poverty line | 19.4% ±15.5 pts | 35.0% | – |
| Households receiving SNAP | 19.8% ±7.2 pts | 17.0% | – |
| Households with a computer | 90.4% ±7.8 pts | 81.1% | – |
| Households with a broadband subscription | 73.2% ±9.2 pts | 65.2% | – |
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 Martin?
Owners occupy 63.6% of Martin's occupied homes and renters 36.4%. The median owner-occupied home is valued at $103,900 by its owner (±$26,844). The median renter pays $638 a month including utilities.
| Measure | Martin | Bennett County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $103,900 ±$26,844 | $156,400 | no clear change |
| Median gross rent | $638 ±$298 | $617 | no clear change |
| Renters paying 35% or more of income on rent | 30.0% ±20.8 pts | 28.4% | – |
| Median monthly owner costs, with a mortgage | $1,216 ±$162 | $1,239 | – |
| Owner-occupied homes | 63.6% ±10.3 pts | 61.2% | −14.0 pts |
| Renter-occupied homes | 36.4% ±10.3 pts | 38.8% | – |
| Housing units | 398 ±79 | 1,151 | no clear change |
| Homeowner vacancy rate | 1.0% ±2.1 pts | 0.4% | – |
| Rental vacancy rate | 13.7% ±9.3 pts | 6.1% | – |
| Single-family detached homes | 74.9% ±8.4 pts | 82.7% | – |
| Mobile homes | 11.1% ±6.3 pts | 9.5% | – |
| Built 2020 or later | 0.0% ±6.1 pts | 0.0% | – |
| Built 2010 to 2019 | 6.0% ±5.2 pts | 4.3% | – |
| Built 1939 or earlier | 17.1% ±7.3 pts | 14.1% | – |
| Households with no vehicle | 2.6% ±3.4 pts | 1.5% | – |
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 Martin building?
Builders took permits for 0 new housing units in Martin 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 Martin work and get to work?
77.9% of Martin's workers drive alone. The average trip to work takes 9.9 minutes.
| Measure | Martin | Bennett County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 59.8% ±9.1 pts | 50.2% | – |
| Unemployment rate | 5.0% ±6.7 pts | 10.0% | – |
| Drove alone to work | 77.9% ±9.5 pts | 81.0% | – |
| Carpooled | 7.5% ±7.5 pts | 6.0% | – |
| Public transportation | 0.0% ±6.1 pts | 0.0% | – |
| Walked | 7.8% ±5.2 pts | 5.0% | – |
| Worked from home | 6.8% ±5.8 pts | 8.0% | – |
| Mean travel time to work | 9.9 min ±2.7 | 12.0 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 Martin?
1 census tract lies mostly in Martin (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9410Bennett County | 1,423 | $64,833 |
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 Martin) · Census block assignment files
How does Martin compare with other places in South Dakota?
By the Census Bureau's July 2025 estimates, Martin is the 10,590th-most populous of the 19,476 U.S. incorporated places that have one and the 69th-most populous of 310 in South Dakota.
Martin 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 | 69th | 310 |
Martin's figures with every place in South Dakota (CSV)
Every place in South Dakota, sortable · Compare Martin 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 Martin?
21 of the 57 figures for Martin 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 Martin 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 Martin.