City · South Dakota
Platte, South Dakota
Platte, city, in Charles Mix County, South Dakota. Platte had 1,230 residents on July 1, 2025 by the Census Bureau's estimate, down 4.6% since 2020; the 2020 Census counted 1,296 and the ACS 2020-2024 5-year estimates put it at 1,161 (±187). GEOID 4650260.
Residents, July 2025 estimate
1,230
Census Bureau estimate (no margin published)
2020 Census count: 1,296 · ACS 2020-2024: 1,161 ±187
Median household income
$72,700
±$27,345 (90% margin)
South Dakota: $75,081
Median home value
$179,200
±$63,367 (90% margin)
South Dakota: $257,400
Median gross rent
$832
±$244 (90% margin)
South Dakota: $946
Where is Platte and what county is it in?
Platte is a city in Charles Mix County, South Dakota. It covers 1.1 square miles of land, 1,232 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 Platte, and is it growing?
The Census Bureau estimates that 1,230 people lived in Platte on July 1, 2025, down 4.6% since 2020, while South Dakota grew 5.5%. The 2020 Census counted 1,296 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 1,161 (±187).
| Measure | Platte | Charles Mix County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 1,161 ±187 | 9,281 | −372 |
| Households | 508 ±79 | 3,032 | −149 |
| Average household size | 2.18 ±0.24 | 2.95 | no clear change |
| Housing units | 596 ±83 | 3,668 | no clear change |
Platte's population since 2000
From 1,367 in 2000 to 1,230 in 2025: down 10.0%. The 2000, 2010 and 2020 figures are census counts, each for Platte 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 Platte?
The median resident of Platte is 35.6 years old; 24.6% are under 18 and 19.3% are 65 or older. The largest group is non-Hispanic white residents at 93.5%, then Hispanic or Latino residents (of any race) at 1.8%.
| Measure | Platte | Charles Mix County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 35.6 ±6.2 | 36.0 | −8.7 |
| Under 18 years | 24.6% ±6.5 pts | 30.7% | – |
| 65 years and over | 19.3% ±5.8 pts | 19.0% | – |
| Male | 55.6% ±5.4 pts | 50.6% | – |
| Hispanic or Latino (any race) | 1.8% ±1.8 pts | 3.0% | – |
| White alone, not Hispanic | 93.5% ±4.2 pts | 63.7% | −5.7 pts |
| Black or African American alone, not Hispanic | 0.0% ±2.1 pts | 0.2% | – |
| Asian alone, not Hispanic | 1.6% ±2.0 pts | 0.6% | – |
| American Indian and Alaska Native alone, not Hispanic | 1.7% ±2.3 pts | 27.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±2.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 1.4% ±1.8 pts | 5.5% | – |
| Some other race alone, not Hispanic | 0.0% ±2.1 pts | 0.0% | – |
| Born outside the United States | 1.0% ±1.1 pts | 0.8% | – |
| Speak a language other than English at home (age 5+) | 2.8% ±2.5 pts | 6.8% | – |
| Civilian veterans (age 18+) | 5.6% ±3.7 pts | 8.1% | – |
| With a disability | 9.7% ±5.1 pts | 11.5% | – |
| No health insurance coverage | 3.4% ±2.8 pts | 17.1% | – |
| High school graduate or higher (age 25+) | 95.3% ±4.1 pts | 91.0% | – |
| Bachelor's degree or higher (age 25+) | 22.4% ±7.0 pts | 25.7% | no clear change |
| Graduate or professional degree (age 25+) | 4.5% ±3.3 pts | 7.3% | – |
| Lived in the same house a year earlier | 84.1% ±6.9 pts | 90.6% | – |
| Moved from another state in the past year | 3.5% ±4.5 pts | 1.2% | – |
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 Platte earn?
Half of Platte's 508 households earn less than $72,700 a year (±$27,345), against $64,038 in Charles Mix County and $75,081 in South Dakota. In 2015-2019 it was $67,080 in 2024 dollars; the margins of error cannot tell the two periods apart. 14.7% of residents live below the poverty line.
| Measure | Platte | Charles Mix County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $72,700 ±$27,345 | $64,038 | no clear change |
| Mean household income | $77,927 ±$11,655 | $84,687 | – |
| Per capita income | $37,968 ±$7,198 | $30,672 | no clear change |
| People below the poverty line | 14.7% ±8.5 pts | 24.0% | no clear change |
| Children under 18 below the poverty line | 32.7% ±19.2 pts | 33.4% | – |
| Households receiving SNAP | 8.1% ±4.9 pts | 14.2% | – |
| Households with a computer | 88.8% ±6.5 pts | 89.3% | – |
| Households with a broadband subscription | 86.2% ±7.1 pts | 82.7% | – |
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 Platte?
Owners occupy 70.7% of Platte's occupied homes and renters 29.3%. The median owner-occupied home is valued at $179,200 by its owner (±$63,367). The median renter pays $832 a month including utilities.
| Measure | Platte | Charles Mix County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $179,200 ±$63,367 | $170,600 | no clear change |
| Median gross rent | $832 ±$244 | $704 | no clear change |
| Renters paying 35% or more of income on rent | 12.9% ±12.7 pts | 22.9% | – |
| Median monthly owner costs, with a mortgage | $1,316 ±$563 | $1,751 | – |
| Owner-occupied homes | 70.7% ±8.6 pts | 72.3% | no clear change |
| Renter-occupied homes | 29.3% ±8.6 pts | 27.7% | – |
| Housing units | 596 ±83 | 3,668 | no clear change |
| Homeowner vacancy rate | 5.0% ±6.1 pts | 1.5% | – |
| Rental vacancy rate | 8.0% ±12.2 pts | 6.3% | – |
| Single-family detached homes | 84.7% ±6.7 pts | 84.4% | – |
| Mobile homes | 2.3% ±2.1 pts | 6.5% | – |
| Built 2020 or later | 0.0% ±4.1 pts | 1.1% | – |
| Built 2010 to 2019 | 2.3% ±3.3 pts | 6.0% | – |
| Built 1939 or earlier | 28.5% ±10.4 pts | 27.5% | – |
| Households with no vehicle | 4.3% ±4.2 pts | 5.2% | – |
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 Platte building?
Builders took permits for 0 new housing units in Platte 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 Platte work and get to work?
77.5% of Platte's workers drive alone. The average trip to work takes 8.1 minutes.
| Measure | Platte | Charles Mix County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 75.4% ±5.8 pts | 61.6% | – |
| Unemployment rate | 1.0% ±1.5 pts | 5.8% | – |
| Drove alone to work | 77.5% ±9.3 pts | 75.3% | – |
| Carpooled | 4.8% ±3.3 pts | 7.5% | – |
| Public transportation | 0.0% ±3.8 pts | 0.4% | – |
| Walked | 5.7% ±6.1 pts | 4.8% | – |
| Worked from home | 8.2% ±5.5 pts | 9.5% | – |
| Mean travel time to work | 8.1 min ±1.9 | 14.1 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 Platte?
No census tract lies mostly in Platte; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9701Charles Mix County | 2,697 | $75,893 |
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 Platte) · Census block assignment files
How does Platte compare with other places in South Dakota?
By the Census Bureau's July 2025 estimates, Platte is the 9,507th-most populous of the 19,476 U.S. incorporated places that have one and the 55th-most populous of 310 in South Dakota.
Platte ranks 39th of 82 places in South Dakota with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 55th | 310 |
| Growth 2020-2025 (PEP) | 70th | 73 |
| Residents per square mile | 31st | 84 |
| Median household income | 39th | 82 |
| Per capita income | 44th | 83 |
| Median home value | 54th | 81 |
| Median gross rent | 39th | 72 |
| Poverty rate | 19th | 55 |
| Bachelor's degree or higher | 60th | 81 |
| Median age | 60th | 83 |
| Owner-occupied share | 42nd | 84 |
| Travel time to work | 84th | 84 |
Platte's figures with every place in South Dakota (CSV)
Every place in South Dakota, sortable · Compare Platte 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 Platte?
25 of the 57 figures for Platte 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 Platte 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 Platte.