Census tract · Lyman County
Census Tract 9401, Lyman County, South Dakota
Census Tract 9401, GEOID 46085940100, in Lyman County, South Dakota, partly within Lower Brule and West Brule. 1,517 residents in the ACS 2020-2024 5-year estimates (±105); the 2020 Census counted 1,614.
Residents, 2020-2024
1,517
±105 (90% margin)
2020 Census count: 1,614
Median household income
$37,614
±$11,826 (90% margin)
Lyman County: $67,143
Median home value
$34,700
±$21,112 (90% margin)
Lyman County: $165,800
Median gross rent
$533
±$156 (90% margin)
Lyman County: $651
Where is Census Tract 9401?
Census Tract 9401 is one of 2 census tracts in Lyman County, South Dakota. It covers 295.75 square miles of land, 5 residents per square mile in 2020. Its GEOID, 46085940100, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Lower Brule | 17% |
| West Brule | 14% |
6 census tracts border Census Tract 9401: Tract 9731 in Brule County ($70,417), Tract 9402 in Buffalo County ($47,045), Tract 9780 in Hughes County ($98,910), Tract 9767 in Hyde County ($73,472), Tract 9726 ($77,375) and Tract 9601 in Stanley County ($87,712). The figure in brackets is each tract's median household income.
Whether a tract counts as low- or moderate-income for bank lending (the Community Reinvestment Act) is set by the FFIEC against its metro area's family income: look it up in the FFIEC census geocoder.
Source: 2024 Gazetteer and 2020 block assignment files, U.S. Census Bureau · Census reference files
How many people live in Census Tract 9401?
The 2020-2024 American Community Survey puts Census Tract 9401's population at 1,517 (±105) in 277 households; the 2020 Census counted 1,614 residents and 411 housing units.
| Measure | Tract 9401 | Lyman County |
|---|---|---|
| Total population | 1,517 ±105 | 3,724 |
| Households | 277 ±50 | 1,188 |
| Average household size | 5.24 ±0.99 | 3.07 |
| Housing units | 358 ±52 | 1,553 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Census Tract 9401?
The median resident of Census Tract 9401 is 24.2 years old; 36.7% are under 18 and 10.9% are 65 or older. The largest group is non-Hispanic American Indian and Alaska Native residents at 89.1%, then non-Hispanic white residents at 8.8%.
| Measure | Tract 9401 | Lyman County |
|---|---|---|
| Median age | 24.2 ±2.5 | 36.1 |
| Under 18 years | 36.7% ±3.0 pts | 28.0% |
| 65 years and over | 10.9% ±2.2 pts | 18.3% |
| Hispanic or Latino (any race) | 0.3% ±0.4 pts | 1.2% |
| White alone, not Hispanic | 8.8% ±4.8 pts | 57.1% |
| Black or African American alone, not Hispanic | 0.1% ±3.9 pts | 0.0% |
| Asian alone, not Hispanic | 0.1% ±0.2 pts | 0.0% |
| American Indian and Alaska Native alone, not Hispanic | 89.1% ±6.9 pts | 39.3% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.9% ±1.1 pts | 0.3% |
| Two or more races, not Hispanic | 0.8% ±0.8 pts | 2.0% |
| Some other race alone, not Hispanic | 0.1% ±0.2 pts | 0.0% |
| Born outside the United States | 0.6% ±0.6 pts | 0.6% |
| Speak a language other than English at home (age 5+) | 6.2% ±3.4 pts | 3.7% |
| Civilian veterans (age 18+) | 5.1% ±1.9 pts | 5.1% |
| With a disability | 15.6% ±2.9 pts | 13.0% |
| No health insurance coverage | 44.6% ±8.0 pts | 21.3% |
| High school graduate or higher (age 25+) | 76.0% ±6.7 pts | 89.4% |
| Bachelor's degree or higher (age 25+) | 10.2% ±7.4 pts | 24.5% |
| Graduate or professional degree (age 25+) | 5.6% ±3.8 pts | 4.9% |
| Lived in the same house a year earlier | 91.6% ±7.7 pts | 94.0% |
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 Census Tract 9401 earn?
Half of the 277 households in Census Tract 9401 earn less than $37,614 a year (±$11,826), against $67,143 across Lyman County. 47.9% of residents live below the poverty line.
| Measure | Tract 9401 | Lyman County |
|---|---|---|
| Median household income | $37,614 ±$11,826 | $67,143 |
| Mean household income | $63,584 ±$23,779 | $99,810 |
| Per capita income | $14,382 ±$3,081 | $37,079 |
| People below the poverty line | 47.9% ±8.9 pts | 23.7% |
| Children under 18 below the poverty line | 49.0% ±11.5 pts | 30.1% |
| Households receiving SNAP | 30.7% ±8.8 pts | 11.4% |
| Households with a computer | 80.9% ±7.5 pts | 89.1% |
| Households with a broadband subscription | 62.1% ±9.1 pts | 82.4% |
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 Census Tract 9401?
Owners occupy 37.5% of Census Tract 9401's occupied homes and renters 62.5%. The median owner-occupied home is valued at $34,700 by its owner (±$21,112). The median renter pays $533 a month including utilities, and 23.4% of renters pay 35% or more of their income on rent.
| Measure | Tract 9401 | Lyman County |
|---|---|---|
| Median home value (owner-occupied) | $34,700 ±$21,112 | $165,800 |
| Median gross rent | $533 ±$156 | $651 |
| Renters paying 35% or more of income on rent | 23.4% ±11.7 pts | 21.4% |
| Owner-occupied homes | 37.5% ±8.4 pts | 69.9% |
| Renter-occupied homes | 62.5% ±8.4 pts | 30.1% |
| Housing units | 358 ±52 | 1,553 |
| Single-family detached homes | 78.2% ±6.4 pts | 80.9% |
| Mobile homes | 13.4% ±5.6 pts | 10.8% |
| Built 2020 or later | 1.4% ±1.6 pts | 0.6% |
| Built 2010 to 2019 | 1.4% ±1.8 pts | 4.9% |
| Built 1939 or earlier | 1.1% ±1.2 pts | 13.1% |
| Households with no vehicle | 21.7% ±6.7 pts | 5.7% |
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 do people in Census Tract 9401 get to work?
68.9% of Census Tract 9401's workers drive alone. The average trip to work takes 10.5 minutes. The unemployment rate in 2020-2024 averaged 8.2%.
| Measure | Tract 9401 | Lyman County |
|---|---|---|
| In the labor force (age 16+) | 43.7% ±7.9 pts | 57.3% |
| Unemployment rate | 8.2% ±4.5 pts | 4.0% |
| Drove alone to work | 68.9% ±10.2 pts | 73.4% |
| Carpooled | 12.6% ±6.7 pts | 8.2% |
| Public transportation | 3.0% ±4.1 pts | 0.8% |
| Walked | 5.2% ±5.9 pts | 3.1% |
| Worked from home | 3.2% ±5.4 pts | 11.2% |
| Mean travel time to work | 10.5 min ±2.4 | 15.8 min |
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
How does Census Tract 9401 compare with the other tracts in Lyman County?
Lyman County has only two tracts, too few for a rank to say anything; the comparison above sets Census Tract 9401 beside the county and the state.
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · How ranks are computed
How reliable are the figures for Census Tract 9401?
5 of the 18 figures for Census Tract 9401 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.
A census tract's figures rest on a few hundred sampled households over five years, so its margins are wider than a city's. Two tracts differ only when the gap between them is larger than their combined 90% margin (the square root of the sum of the two squared margins). 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 · Check it at data.census.gov
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections