County · South Dakota
Grant County, South Dakota
Grant County, South Dakota. Grant County had 7,534 residents in 2025 by the Census Bureau's estimate, down 0.4% since 2020, while South Dakota grew 5.5%. It holds 26 places (9 cities, villages and boroughs and 17 towns and townships) and 2 census tracts. GEOID 46051.
Residents, July 2025 estimate
7,534
Census Bureau estimate (no margin published)
2020 Census count: 7,556 · ACS 2020-2024: 7,563
Median household income
$75,028
±$9,695 (90% margin)
South Dakota: $75,081
Median home value
$171,000
±$14,506 (90% margin)
South Dakota: $257,400
Median gross rent
$763
±$116 (90% margin)
South Dakota: $946
How many people live in Grant County, and is it growing?
The 2020 Census counted 7,556 residents in Grant County. The Census Bureau estimates 7,534 for July 1, 2025, down 0.4% since 2020, while South Dakota grew 5.5%. The 2020-2024 American Community Survey puts the population at 7,563 over 681 square miles of land.
| Measure | Grant County | South Dakota | Change since 2015-2019 |
|---|---|---|---|
| Total population | 7,563 | 907,428 | +414 |
| Households | 3,029±159 | 365,544 | no clear change |
| Average household size | 2.39±0.13 | 2.39 | +0.22 |
| Housing units | 3,456±19 | 408,584 | −148 |
Grant County's population since 2000
From 7,847 in 2000 to 7,534 in 2025: down 4.0%. The 2000, 2010 and 2020 figures are census counts. 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); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Grant County?
Grant County holds 26 places: 9 cities, villages and boroughs (incorporated places) and 17 towns and townships (county subdivisions with their own government). The largest is Milbank with 3,512 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Milbank | 3,544 | $56,011 |
|---|---|---|
| Alban TownshipGEOID 4605100580 | 598 | $106,860 |
| Big Stone City | 412 | $63,333 |
| Grant Center TownshipGEOID 4605125740 | 397 | $70,750 |
| Melrose TownshipGEOID 4605141940 | 349 | $128,841 |
| Big Stone TownshipGEOID 4605105500 | 321 | $110,759 |
| Vernon Township, Grant CountyGEOID 4605166900 | 218 | $106,250 |
| Blooming Valley TownshipGEOID 4605106100 | 174 | $100,625 |
| Osceola Township, Grant CountyGEOID 4605147780 | 169 | $96,875 |
| Kilborn TownshipGEOID 4605133940 | 168 | not published |
| Adams Township, Grant CountyGEOID 4605100260 | 150 | $111,023 |
| Madison Township, Grant CountyGEOID 4605140180 | 133 | $112,917 |
| StockholmGEOID 4661740 | 102 | not published |
| RevilloGEOID 4654220 | 99 | $56,300 |
| Mazeppa TownshipGEOID 4605141580 | 99 | not published |
| Georgia TownshipGEOID 4605124100 | 79 | $106,500 |
| Twin Brooks TownshipGEOID 4605164740 | 78 | $138,500 |
| Farmington Township, Grant CountyGEOID 4605121180 | 77 | $105,625 |
| Stockholm TownshipGEOID 4605161780 | 72 | $79,167 |
| Troy Township, Grant CountyGEOID 4605164180 | 67 | $68,068 |
| La BoltGEOID 4634540 | 66 | $71,667 |
| StrandburgGEOID 4661980 | 63 | $68,125 |
| Lura TownshipGEOID 4605139500 | 48 | $104,375 |
| Twin BrooksGEOID 4664700 | 47 | not published |
| MarvinGEOID 4641220 | 19 | $43,125 |
| AlbeeGEOID 4600620 | 7 | not published |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Grant County?
The median resident of Grant County is 44.5 years old; 22.2% are under 18 and 23.4% are 65 or older. The largest group is non-Hispanic white residents at 89.3%, then Hispanic or Latino residents (of any race) at 7.4%. 6.5% of residents were born outside the United States.
| Measure | Grant County | South Dakota | Change since 2015-2019 |
|---|---|---|---|
| Median age | 44.5±0.8 | 38.0 | no clear change |
| Under 18 years | 22.2%±0.9 pts | 24.2% | – |
| 65 years and over | 23.4%±0.2 pts | 18.0% | – |
| Hispanic or Latino (any race) | 7.4% | 4.8% | +2.9 pts |
| White alone, not Hispanic | 89.3%±0.1 pts | 79.8% | −3.3 pts |
| Black or African American alone, not Hispanic | 0.4%±1.0 pts | 2.1% | – |
| Asian alone, not Hispanic | 0.8%±1.3 pts | 1.4% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.3%±0.3 pts | 7.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.3 pts | 0.0% | – |
| Two or more races, not Hispanic | 1.9%±1.4 pts | 4.4% | – |
| Some other race alone, not Hispanic | 0.0%±0.3 pts | 0.3% | – |
| Born outside the United States | 6.5%±2.2 pts | 4.0% | +2.5 pts |
| Speak a language other than English at home (age 5+) | 10.8%±3.7 pts | 7.1% | – |
| Civilian veterans (age 18+) | 7.5%±2.2 pts | 7.9% | – |
| With a disability | 15.1%±2.6 pts | 12.5% | – |
| No health insurance coverage | 7.8%±3.0 pts | 9.0% | no clear change |
| High school graduate or higher (age 25+) | 91.6%±2.8 pts | 93.2% | – |
| Bachelor's degree or higher (age 25+) | 25.3%±4.9 pts | 31.9% | no clear change |
| Graduate or professional degree (age 25+) | 7.3%±2.9 pts | 10.0% | – |
| Moved from another state in the past year | 4.4%±2.4 pts | 3.2% | – |
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 Grant County earn?
Half of Grant County's 3,029 households earn less than $75,028 a year (±$9,695), against $75,081 in South Dakota. In 2015-2019 it was $71,575 in 2024 dollars; the margins of error cannot tell the two periods apart. 11.6% of residents live below the poverty line.
| Measure | Grant County | South Dakota | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $75,028±$9,695 | $75,081 | no clear change |
| Mean household income | $88,634±$6,953 | $98,527 | – |
| Per capita income | $37,694±$3,230 | $40,550 | no clear change |
| People below the poverty line | 11.6%±3.8 pts | 11.9% | no clear change |
| Children under 18 below the poverty line | 12.5%±6.5 pts | 14.3% | no clear change |
| Households receiving SNAP | 7.6%±3.2 pts | 7.9% | – |
| Households with a broadband subscription | 84.1%±4.4 pts | 89.6% | – |
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 Grant County?
Owners occupy 75.6% of Grant County's occupied homes and renters 24.4%. The median owner-occupied home is valued at $171,000 by its owner (±$14,506). The median renter pays $763 a month including utilities, and 22.2% of renters pay 35% or more of their income on rent.
| Measure | Grant County | South Dakota | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $171,000±$14,506 | $257,400 | no clear change |
| Median gross rent | $763±$116 | $946 | no clear change |
| Renters paying 35% or more of income on rent | 22.2%±12.6 pts | 30.4% | no clear change |
| Median monthly owner costs, with a mortgage | $1,402±$173 | $1,680 | – |
| Owner-occupied homes | 75.6%±4.2 pts | 68.6% | no clear change |
| Housing units | 3,456±19 | 408,584 | −148 |
| Homeowner vacancy rate | 0.0%±0.1 pts | 0.8% | – |
| Rental vacancy rate | 0.8%±1.3 pts | 6.0% | – |
| Single-family detached homes | 76.3%±5.1 pts | 66.9% | – |
| Mobile homes | 5.5%±2.6 pts | 7.2% | – |
| Built 2020 or later | 3.1%±2.4 pts | 2.3% | – |
| Built 1939 or earlier | 27.3%±5.2 pts | 15.8% | – |
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 Grant County building?
Builders took permits for 20 new housing units across Grant County in 2025 (16 single-family), 2.7 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Grant County get to work?
74.9% of Grant County's workers drive alone and 11.0% work from home. The average trip to work takes 13.7 minutes. The unemployment rate in 2020-2024 averaged 2.7%.
| Measure | Grant County | South Dakota | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 69.1%±3.3 pts | 67.2% | – |
| Unemployment rate | 2.7%±1.7 pts | 2.9% | – |
| Drove alone to work | 74.9%±5.4 pts | 77.0% | – |
| Carpooled | 9.0%±3.3 pts | 8.3% | – |
| Public transportation | 0.0%±0.6 pts | 0.5% | – |
| Walked | 4.5%±2.7 pts | 3.1% | – |
| Worked from home | 11.0%±4.5 pts | 9.7% | +6.1 pts |
| Mean travel time to work | 13.7 min±1.6 | 17.8 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 are Grant County's census tracts?
Grant County is divided into 2 census tracts. Among those with a reliable estimate, median household income runs from $70,921 (Tract 9531) to $84,554 (Tract 9533).
| Tract 953146051953100 | 5,663±226 | $70,921 |
|---|---|---|
| Tract 953346051953300 | 1,900±226 | $84,554 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Grant County compare with South Dakota's other counties?
| Measure | Rank |
|---|---|
| Population | 23rd of 66 |
| Growth 2020-2025 | 44th of 66 |
| Residents per square mile | 19th of 66 |
| Median household income | 21st of 66 |
| Median home value | 30th of 66 |
| Median gross rent | 33rd of 65 |
| Poverty rate | 27th of 65 |
| Bachelor's degree or higher | 33rd of 66 |
| Median age | 17th of 66 |
Source: PlainCities ranks 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 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 Grant County 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' school search.