Census tract · Pennington County
Census Tract 109.05, Pennington County, South Dakota
Census Tract 109.05, GEOID 46103010905, in Pennington County, South Dakota, mostly within Rapid City (89% of its census blocks). 7,565 residents in the ACS 2020-2024 5-year estimates (±919); the 2020 Census counted 6,518.
Residents, 2020-2024
7,565
±919 (90% margin)
2020 Census count: 6,518
Median household income
$82,685
±$16,843 (90% margin)
Pennington County: $74,517
Median home value
$397,100
±$68,294 (90% margin)
Pennington County: $302,200
Median gross rent
$1,245
±$257 (90% margin)
Pennington County: $1,120
Where is Census Tract 109.05?
Census Tract 109.05 is one of 25 census tracts in Pennington County, South Dakota. It covers 18.24 square miles of land, 357 residents per square mile in 2020. Its GEOID, 46103010905, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Rapid City | 89% |
7 census tracts border Census Tract 109.05: Tract 108 ($56,268), Tract 109.04 ($84,125), Tract 109.07 ($71,923), Tract 110.02 ($89,809), Tract 110.04 ($137,159), Tract 110.05 ($107,850) and Tract 116.01 ($93,115). 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 109.05?
The 2020-2024 American Community Survey puts Census Tract 109.05's population at 7,565 (±919) in 2,729 households; the 2020 Census counted 6,518 residents and 2,985 housing units.
| Measure | Tract 109.05 | Rapid City |
|---|---|---|
| Total population | 7,565 ±919 | 77,946 |
| Households | 2,729 ±242 | 32,368 |
| Average household size | 2.70 ±0.22 | 2.30 |
| Housing units | 2,916 ±215 | 35,577 |
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 109.05?
The median resident of Census Tract 109.05 is 33.4 years old; 32.1% are under 18 and 15.4% are 65 or older. The largest group is non-Hispanic white residents at 77.6%, then non-Hispanic residents of two or more races at 10.3%.
| Measure | Tract 109.05 | Rapid City |
|---|---|---|
| Median age | 33.4 ±3.1 | 39.1 |
| Under 18 years | 32.1% ±4.6 pts | 22.0% |
| 65 years and over | 15.4% ±3.1 pts | 20.7% |
| Hispanic or Latino (any race) | 6.6% ±3.8 pts | 6.1% |
| White alone, not Hispanic | 77.6% ±7.8 pts | 76.3% |
| Black or African American alone, not Hispanic | 0.3% ±0.3 pts | 1.2% |
| Asian alone, not Hispanic | 1.2% ±1.5 pts | 1.3% |
| American Indian and Alaska Native alone, not Hispanic | 1.7% ±2.7 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 | 10.3% ±4.9 pts | 7.4% |
| Some other race alone, not Hispanic | 2.2% ±2.5 pts | 0.6% |
| Born outside the United States | 1.8% ±1.6 pts | 2.6% |
| Speak a language other than English at home (age 5+) | 2.8% ±2.0 pts | 4.8% |
| Civilian veterans (age 18+) | 9.5% ±4.0 pts | 11.5% |
| With a disability | 19.9% ±4.8 pts | 16.4% |
| No health insurance coverage | 10.0% ±4.5 pts | 9.8% |
| High school graduate or higher (age 25+) | 97.3% ±2.3 pts | 94.5% |
| Bachelor's degree or higher (age 25+) | 45.1% ±7.2 pts | 37.0% |
| Graduate or professional degree (age 25+) | 15.9% ±6.4 pts | 14.3% |
| Lived in the same house a year earlier | 74.0% ±8.1 pts | 81.6% |
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 109.05 earn?
Half of the 2,729 households in Census Tract 109.05 earn less than $82,685 a year (±$16,843), against $74,517 across Pennington County: 11th highest of the county's 25 tracts with a reliable estimate. 13.8% of residents live below the poverty line.
| Measure | Tract 109.05 | Rapid City |
|---|---|---|
| Median household income | $82,685 ±$16,843 | $70,870 |
| Mean household income | $100,479 ±$11,327 | $96,820 |
| Per capita income | $38,582 ±$4,500 | $42,204 |
| People below the poverty line | 13.8% ±5.8 pts | 12.5% |
| Children under 18 below the poverty line | 26.5% ±13.6 pts | 18.1% |
| Households receiving SNAP | 6.1% ±3.7 pts | 9.4% |
| Households with a computer | 95.4% ±2.9 pts | 94.6% |
| Households with a broadband subscription | 83.3% ±5.5 pts | 90.3% |
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 Census Tract 109.05?
Owners occupy 52.9% of Census Tract 109.05's occupied homes and renters 47.1%. The median owner-occupied home is valued at $397,100 by its owner (±$68,294). The median renter pays $1,245 a month including utilities, and 42.6% of renters pay 35% or more of their income on rent.
| Measure | Tract 109.05 | Rapid City |
|---|---|---|
| Median home value (owner-occupied) | $397,100 ±$68,294 | $299,400 |
| Median gross rent | $1,245 ±$257 | $1,109 |
| Renters paying 35% or more of income on rent | 42.6% ±12.4 pts | 33.9% |
| Median monthly owner costs, with a mortgage | $2,259 ±$394 | $1,743 |
| Owner-occupied homes | 52.9% ±6.5 pts | 62.9% |
| Renter-occupied homes | 47.1% ±6.5 pts | 37.1% |
| Housing units | 2,916 ±215 | 35,577 |
| Single-family detached homes | 49.0% ±7.8 pts | 58.0% |
| Mobile homes | 1.9% ±2.3 pts | 4.6% |
| Built 2020 or later | 8.5% ±3.8 pts | 3.5% |
| Built 2010 to 2019 | 26.5% ±6.6 pts | 11.6% |
| Built 1939 or earlier | 4.1% ±3.7 pts | 7.4% |
| Households with no vehicle | 7.8% ±3.6 pts | 7.0% |
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 109.05 get to work?
69.4% of Census Tract 109.05's workers drive alone and 14.7% work from home. The average trip to work takes 22.6 minutes.
| Measure | Tract 109.05 | Rapid City |
|---|---|---|
| In the labor force (age 16+) | 66.6% ±5.6 pts | 63.9% |
| Unemployment rate | 4.0% ±3.1 pts | 2.6% |
| Drove alone to work | 69.4% ±8.7 pts | 76.7% |
| Carpooled | 15.3% ±7.5 pts | 9.3% |
| Public transportation | 0.4% ±1.3 pts | 0.2% |
| Walked | 0.0% ±0.7 pts | 1.8% |
| Worked from home | 14.7% ±7.3 pts | 10.0% |
| Mean travel time to work | 22.6 min ±7.2 | 17.5 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 109.05 compare with the other tracts in Pennington County?
Among Pennington County's tracts with a reliable estimate, Census Tract 109.05 ranks as shown below (1 = highest).
| Measure | In Pennington County | In Rapid City |
|---|---|---|
| Population | 4th of 25 | 3rd of 18 |
| Residents per square mile | 17th of 25 | 14th of 18 |
| Median household income | 11th of 25 | 6th of 18 |
| Per capita income | 13th of 25 | 9th of 18 |
| Median home value | 5th of 25 | 3rd of 18 |
| Median gross rent | 9th of 25 | 6th of 18 |
| Poverty rate | 7th of 19 | 7th of 16 |
| Bachelor's degree or higher | 5th of 25 | 4th of 18 |
| Median age | 22nd of 25 | 16th of 18 |
| Owner-occupied share | 21st of 25 | 15th of 18 |
The tracts next to it on Pennington County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| 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 |
| Tract 117 | 10th | $83,125±$11,015 · within the margin of this tract |
| Tract 109.05 | 11th | $82,685±$16,843 |
| Tract 112 | 12th | $79,045±$15,444 · within the margin of this tract |
| Tract 116.02 | 13th | $76,947±$9,179 · within the margin of this tract |
| Tract 109.07 | 14th | $71,923±$15,599 · 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 109.05?
2 of the 18 figures for Census Tract 109.05 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