City · South Dakota
Wilmot, South Dakota
Wilmot, city, in Roberts County, South Dakota. Wilmot had 423 residents on July 1, 2025 by the Census Bureau's estimate, down 2.5% since 2020; the 2020 Census counted 432 and the ACS 2020-2024 5-year estimates put it at 381 (±84). GEOID 4671980.
Residents, July 2025 estimate
423
Census Bureau estimate (no margin published)
2020 Census count: 432 · ACS 2020-2024: 381 ±84
Median household income
$59,583
±$28,246 (90% margin)
South Dakota: $75,081
Median home value
$78,300
±$16,164 (90% margin)
South Dakota: $257,400
Median gross rent
$608
±$194 (90% margin)
South Dakota: $946
Where is Wilmot and what county is it in?
Wilmot is a city in Roberts County, South Dakota. It covers 0.5 square miles of land, 811 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 Wilmot, and is it growing?
The Census Bureau estimates that 423 people lived in Wilmot on July 1, 2025, down 2.5% since 2020, while South Dakota grew 5.5%. The 2020 Census counted 432 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 381 (±84).
| Measure | Wilmot | Roberts County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 381 ±84 | 10,221 | −179 |
| Households | 171 ±39 | 3,625 | −93 |
| Average household size | 2.01 ±0.29 | 2.76 | no clear change |
| Housing units | 211 ±43 | 4,848 | −83 |
Wilmot's population since 2000
From 543 in 2000 to 423 in 2025: down 22.1%. The 2000, 2010 and 2020 figures are census counts, each for Wilmot 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 Wilmot?
The median resident of Wilmot is 60.9 years old; 12.1% are under 18 and 38.6% are 65 or older. The largest group is non-Hispanic white residents at 85.6%, then non-Hispanic residents of two or more races at 11.5%.
| Measure | Wilmot | Roberts County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 60.9 ±10.5 | 38.5 | no clear change |
| Under 18 years | 12.1% ±6.6 pts | 28.2% | – |
| 65 years and over | 38.6% ±9.9 pts | 20.9% | – |
| Male | 55.9% ±5.3 pts | 51.1% | – |
| Hispanic or Latino (any race) | 0.3% ±0.6 pts | 2.6% | – |
| White alone, not Hispanic | 85.6% ±7.8 pts | 56.5% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±6.3 pts | 0.3% | – |
| Asian alone, not Hispanic | 0.0% ±6.3 pts | 0.8% | – |
| American Indian and Alaska Native alone, not Hispanic | 2.6% ±2.0 pts | 34.5% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±6.3 pts | 0.0% | – |
| Two or more races, not Hispanic | 11.5% ±7.3 pts | 5.2% | – |
| Some other race alone, not Hispanic | 0.0% ±6.3 pts | 0.1% | – |
| Born outside the United States | 0.5% ±0.9 pts | 1.2% | – |
| Speak a language other than English at home (age 5+) | 2.4% ±2.1 pts | 5.3% | – |
| Civilian veterans (age 18+) | 9.6% ±4.3 pts | 7.7% | – |
| With a disability | 16.9% ±6.1 pts | 10.4% | – |
| No health insurance coverage | 8.7% ±6.8 pts | 18.2% | – |
| High school graduate or higher (age 25+) | 88.2% ±7.2 pts | 91.5% | – |
| Bachelor's degree or higher (age 25+) | 27.4% ±14.5 pts | 18.6% | no clear change |
| Graduate or professional degree (age 25+) | 6.1% ±5.4 pts | 5.2% | – |
| Lived in the same house a year earlier | 92.5% ±4.2 pts | 91.7% | – |
| Moved from another state in the past year | 0.8% ±1.7 pts | 1.4% | – |
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 Wilmot earn?
Half of Wilmot's 171 households earn less than $59,583 a year (±$28,246), against $65,130 in Roberts County and $75,081 in South Dakota. In 2015-2019 it was $56,920 in 2024 dollars; the margins of error cannot tell the two periods apart. 12.5% of residents live below the poverty line.
| Measure | Wilmot | Roberts County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $59,583 ±$28,246 | $65,130 | no clear change |
| Mean household income | $76,368 ±$15,594 | $83,087 | – |
| Per capita income | $38,151 ±$9,147 | $32,107 | no clear change |
| People below the poverty line | 12.5% ±5.7 pts | 15.7% | – |
| Children under 18 below the poverty line | 17.4% ±18.1 pts | 20.7% | – |
| Households receiving SNAP | 6.4% ±4.1 pts | 10.6% | – |
| Households with a computer | 77.2% ±12.0 pts | 87.9% | – |
| Households with a broadband subscription | 72.5% ±13.1 pts | 83.3% | – |
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 Wilmot?
Owners occupy 84.8% of Wilmot's occupied homes and renters 15.2%. The median owner-occupied home is valued at $78,300 by its owner (±$16,164). The median renter pays $608 a month including utilities.
| Measure | Wilmot | Roberts County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $78,300 ±$16,164 | $154,500 | no clear change |
| Median gross rent | $608 ±$194 | $658 | no clear change |
| Renters paying 35% or more of income on rent | 21.1% ±21.0 pts | 20.8% | – |
| Median monthly owner costs, with a mortgage | $1,138 ±$77 | $1,567 | – |
| Owner-occupied homes | 84.8% ±8.2 pts | 71.2% | +15.5 pts |
| Renter-occupied homes | 15.2% ±8.2 pts | 28.8% | – |
| Housing units | 211 ±43 | 4,848 | −83 |
| Homeowner vacancy rate | 0.0% ±15.3 pts | 0.4% | – |
| Rental vacancy rate | 0.0% ±46.0 pts | 10.5% | – |
| Single-family detached homes | 75.4% ±10.8 pts | 80.0% | – |
| Mobile homes | 15.6% ±11.6 pts | 11.6% | – |
| Built 2020 or later | 0.0% ±11.2 pts | 0.7% | – |
| Built 2010 to 2019 | 3.3% ±4.3 pts | 8.3% | – |
| Built 1939 or earlier | 29.4% ±11.7 pts | 22.2% | – |
| Households with no vehicle | 4.7% ±3.1 pts | 4.6% | – |
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 Wilmot building?
Builders took permits for 1 new housing units in Wilmot in 2025 (1 in single-family houses), 2.4 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 Wilmot work and get to work?
78.9% of Wilmot's workers drive alone. The average trip to work takes 20.9 minutes.
| Measure | Wilmot | Roberts County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 48.1% ±10.0 pts | 60.2% | – |
| Unemployment rate | 0.6% ±1.8 pts | 6.0% | – |
| Drove alone to work | 78.9% ±13.6 pts | 75.3% | – |
| Carpooled | 6.0% ±5.6 pts | 8.1% | – |
| Public transportation | 0.0% ±13.9 pts | 1.1% | – |
| Walked | 1.8% ±2.7 pts | 4.2% | – |
| Worked from home | 9.6% ±11.7 pts | 9.0% | – |
| Mean travel time to work | 20.9 min ±4.6 | 16.2 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 Wilmot?
No census tract lies mostly in Wilmot; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9504Roberts County | 1,888 | $81,307 |
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 Wilmot) · Census block assignment files
How does Wilmot compare with other places in South Dakota?
By the Census Bureau's July 2025 estimates, Wilmot is the 13,883rd-most populous of the 19,476 U.S. incorporated places that have one and the 130th-most populous of 310 in South Dakota.
Wilmot 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 | 130th | 310 |
Wilmot's figures with every place in South Dakota (CSV)
Every place in South Dakota, sortable · Compare Wilmot 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 Wilmot?
24 of the 57 figures for Wilmot 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 Wilmot 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 Wilmot.