Census tract · Pennington County
Census Tract 109.08, Pennington County, South Dakota
Census Tract 109.08, GEOID 46103010908, in Pennington County, South Dakota, partly within Rapid Valley, Green Valley, Rapid City and Box Elder. 7,883 residents in the ACS 2020-2024 5-year estimates (±716); the 2020 Census counted 7,499.
Residents, 2020-2024
7,883
±716 (90% margin)
2020 Census count: 7,499
Median household income
$89,667
±$14,392 (90% margin)
Pennington County: $74,517
Median home value
$285,300
±$20,728 (90% margin)
Pennington County: $302,200
Median gross rent
$1,407
±$153 (90% margin)
Pennington County: $1,120
Where is Census Tract 109.08?
Census Tract 109.08 is one of 25 census tracts in Pennington County, South Dakota. It covers 14.38 square miles of land, 522 residents per square mile in 2020. Its GEOID, 46103010908, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Rapid Valley | 40% |
| Green Valley | 23% |
| Rapid City | 16% |
| Box Elder | 14% |
5 census tracts border Census Tract 109.08: Tract 109.06 ($83,409), Tract 109.07 ($71,923), Tract 114 ($59,886), Tract 116.01 ($93,115) and Tract 118 ($48,833). 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 109.08?
The 2020-2024 American Community Survey puts Census Tract 109.08's population at 7,883 (±716) in 3,236 households; the 2020 Census counted 7,499 residents and 2,954 housing units.
| Measure | Tract 109.08 | Pennington County |
|---|---|---|
| Total population | 7,883 ±716 | 113,512 |
| Households | 3,236 ±327 | 46,370 |
| Average household size | 2.43 ±0.16 | 2.37 |
| Housing units | 3,469 ±301 | 51,681 |
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 109.08?
The median resident of Census Tract 109.08 is 35.3 years old; 23.3% are under 18 and 12.0% are 65 or older. The largest group is non-Hispanic white residents at 73.9%, then Hispanic or Latino residents (of any race) at 9.4%. 2.4% of residents were born outside the United States.
| Measure | Tract 109.08 | Pennington County |
|---|---|---|
| Median age | 35.3 ±3.1 | 40.1 |
| Under 18 years | 23.3% ±3.9 pts | 22.0% |
| 65 years and over | 12.0% ±1.9 pts | 20.1% |
| Hispanic or Latino (any race) | 9.4% ±4.6 pts | 5.7% |
| White alone, not Hispanic | 73.9% ±8.1 pts | 77.8% |
| Black or African American alone, not Hispanic | 0.7% ±0.7 pts | 1.1% |
| Asian alone, not Hispanic | 1.7% ±2.1 pts | 1.2% |
| American Indian and Alaska Native alone, not Hispanic | 3.6% ±2.9 pts | 6.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.3 pts | 0.0% |
| Two or more races, not Hispanic | 8.2% ±4.4 pts | 7.5% |
| Some other race alone, not Hispanic | 2.5% ±3.4 pts | 0.7% |
| Born outside the United States | 2.4% ±1.5 pts | 2.5% |
| Speak a language other than English at home (age 5+) | 7.5% ±3.6 pts | 4.4% |
| Civilian veterans (age 18+) | 14.8% ±4.2 pts | 12.3% |
| With a disability | 13.4% ±4.1 pts | 15.6% |
| No health insurance coverage | 10.7% ±4.2 pts | 10.2% |
| High school graduate or higher (age 25+) | 95.5% ±3.4 pts | 94.6% |
| Bachelor's degree or higher (age 25+) | 26.2% ±5.9 pts | 34.6% |
| Graduate or professional degree (age 25+) | 3.2% ±1.9 pts | 12.7% |
| Lived in the same house a year earlier | 85.8% ±4.5 pts | 83.3% |
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 109.08 earn?
Half of the 3,236 households in Census Tract 109.08 earn less than $89,667 a year (±$14,392), against $74,517 across Pennington County: 6th highest of the county's 25 tracts with a reliable estimate.
| Measure | Tract 109.08 | Pennington County |
|---|---|---|
| Median household income | $89,667 ±$14,392 | $74,517 |
| Mean household income | $95,640 ±$7,669 | $99,289 |
| Per capita income | $39,927 ±$3,914 | $42,302 |
| People below the poverty line | 3.5% ±2.4 pts | 11.2% |
| Children under 18 below the poverty line | 5.3% ±6.6 pts | 15.2% |
| Households receiving SNAP | 3.1% ±2.6 pts | 8.1% |
| Households with a computer | 96.6% ±2.0 pts | 95.2% |
| Households with a broadband subscription | 93.5% ±4.6 pts | 90.6% |
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 Census Tract 109.08?
Owners occupy 78.2% of Census Tract 109.08's occupied homes and renters 21.8%. The median owner-occupied home is valued at $285,300 by its owner (±$20,728). The median renter pays $1,407 a month including utilities.
| Measure | Tract 109.08 | Pennington County |
|---|---|---|
| Median home value (owner-occupied) | $285,300 ±$20,728 | $302,200 |
| Median gross rent | $1,407 ±$153 | $1,120 |
| Renters paying 35% or more of income on rent | 17.9% ±15.7 pts | 33.9% |
| Median monthly owner costs, with a mortgage | $1,720 ±$97 | $1,803 |
| Owner-occupied homes | 78.2% ±7.3 pts | 69.3% |
| Renter-occupied homes | 21.8% ±7.3 pts | 30.7% |
| Housing units | 3,469 ±301 | 51,681 |
| Single-family detached homes | 70.0% ±7.5 pts | 62.3% |
| Mobile homes | 9.3% ±4.5 pts | 8.7% |
| Built 2020 or later | 11.0% ±5.0 pts | 3.4% |
| Built 2010 to 2019 | 18.7% ±5.7 pts | 12.4% |
| Built 1939 or earlier | 1.8% ±1.7 pts | 6.5% |
| Households with no vehicle | 0.0% ±0.8 pts | 5.6% |
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 do people in Census Tract 109.08 get to work?
78.0% of Census Tract 109.08's workers drive alone and 9.4% work from home. The average trip to work takes 20.5 minutes. The unemployment rate in 2020-2024 averaged 6.5%.
| Measure | Tract 109.08 | Pennington County |
|---|---|---|
| In the labor force (age 16+) | 78.3% ±4.3 pts | 64.4% |
| Unemployment rate | 6.5% ±4.0 pts | 3.2% |
| Drove alone to work | 78.0% ±5.7 pts | 77.4% |
| Carpooled | 10.7% ±4.9 pts | 9.1% |
| Public transportation | 0.0% ±0.6 pts | 0.2% |
| Walked | 0.3% ±0.4 pts | 1.9% |
| Worked from home | 9.4% ±3.6 pts | 9.6% |
| Mean travel time to work | 20.5 min ±5.0 | 19.4 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 109.08 compare with the other tracts in Pennington County?
Among Pennington County's tracts with a reliable estimate, Census Tract 109.08 ranks as shown below (1 = highest).
| Measure | In Pennington County |
|---|---|
| Population | 3rd of 25 |
| Residents per square mile | 16th of 25 |
| Median household income | 6th of 25 |
| Per capita income | 10th of 25 |
| Median home value | 12th of 25 |
| Median gross rent | 4th of 25 |
| Bachelor's degree or higher | 14th of 25 |
| Median age | 20th of 25 |
| Owner-occupied share | 7th of 25 |
The tracts next to it on Pennington County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 113 | 3rd | $95,304±$9,501 · within the margin of this tract |
| Tract 116.01 | 4th | $93,115±$13,998 · within the margin of this tract |
| Tract 110.02 | 5th | $89,809±$7,511 · within the margin of this tract |
| Tract 109.08 | 6th | $89,667±$14,392 |
| Tract 110.01 | 7th | $84,914±$26,932 · within the margin of this tract |
| Tract 109.04 | 8th | $84,125±$12,101 · within the margin of this tract |
| Tract 109.06 | 9th | $83,409±$14,005 · within the margin of this tract |
"Within the margin": the two incomes differ by less than their combined 90% margins, so the survey cannot say which is higher and the ranks between them are not firm.
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 109.08?
3 of the 18 figures for Census Tract 109.08 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