Census tract · Douglas County
Census Tract 140.17, Douglas County, Colorado
Census Tract 140.17, GEOID 08035014017, in Douglas County, Colorado, mostly within Castle Rock (62% of its census blocks). 2,959 residents in the ACS 2020-2024 5-year estimates (±426); the 2020 Census counted 3,287.
Residents, 2020-2024
2,959
±426 (90% margin)
2020 Census count: 3,287
Median household income
$161,250
±$42,446 (90% margin)
Douglas County: $149,594
Median home value
$848,800
±$64,899 (90% margin)
Douglas County: $713,600
Median gross rent
$2,247
±$262 (90% margin)
Douglas County: $2,193
Where is Census Tract 140.17?
Census Tract 140.17 is one of 72 census tracts in Douglas County, Colorado. It covers 3.60 square miles of land, 913 residents per square mile in 2020. Its GEOID, 08035014017, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Castle Rock | 62% |
| Castle Pines | 4% |
7 census tracts border Census Tract 140.17: Tract 140.11 ($165,339), Tract 140.13 ($181,386), Tract 140.16 ($187,750), Tract 141.23 ($97,207), Tract 141.41 ($184,924), Tract 141.42 ($250,000 or more) and Tract 145.03 ($109,965). 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 140.17?
The 2020-2024 American Community Survey puts Census Tract 140.17's population at 2,959 (±426) in 1,079 households; the 2020 Census counted 3,287 residents and 1,253 housing units.
| Measure | Tract 140.17 | Castle Rock |
|---|---|---|
| Total population | 2,959 ±426 | 79,123 |
| Households | 1,079 ±137 | 28,219 |
| Average household size | 2.65 ±0.29 | 2.78 |
| Housing units | 1,180 ±116 | 29,159 |
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 140.17?
The median resident of Census Tract 140.17 is 45.3 years old; 20.8% are under 18 and 18.5% are 65 or older. The largest group is non-Hispanic white residents at 84.1%, then Hispanic or Latino residents (of any race) at 11.0%.
| Measure | Tract 140.17 | Castle Rock |
|---|---|---|
| Median age | 45.3 ±6.7 | 36.5 |
| Under 18 years | 20.8% ±3.2 pts | 26.1% |
| 65 years and over | 18.5% ±4.0 pts | 11.4% |
| Hispanic or Latino (any race) | 11.0% ±6.6 pts | 11.7% |
| White alone, not Hispanic | 84.1% ±6.9 pts | 77.8% |
| Black or African American alone, not Hispanic | 0.7% ±0.7 pts | 0.8% |
| Asian alone, not Hispanic | 1.2% ±1.2 pts | 2.5% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.4 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.4 pts | 0.1% |
| Two or more races, not Hispanic | 3.0% ±3.2 pts | 6.3% |
| Some other race alone, not Hispanic | 0.0% ±1.4 pts | 0.7% |
| Born outside the United States | 0.7% ±0.9 pts | 5.6% |
| Speak a language other than English at home (age 5+) | 1.0% ±0.9 pts | 8.2% |
| Civilian veterans (age 18+) | 13.5% ±4.6 pts | 7.5% |
| With a disability | 5.8% ±2.8 pts | 7.5% |
| No health insurance coverage | 3.8% ±2.3 pts | 4.8% |
| High school graduate or higher (age 25+) | 97.6% ±2.6 pts | 97.1% |
| Bachelor's degree or higher (age 25+) | 57.8% ±8.9 pts | 55.9% |
| Graduate or professional degree (age 25+) | 17.3% ±5.0 pts | 18.8% |
| Lived in the same house a year earlier | 89.9% ±6.7 pts | 84.4% |
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 Census Tract 140.17 earn?
Half of the 1,079 households in Census Tract 140.17 earn less than $161,250 a year (±$42,446), against $149,594 across Douglas County: 31st highest of the county's 72 tracts with a reliable estimate.
| Measure | Tract 140.17 | Castle Rock |
|---|---|---|
| Median household income | $161,250 ±$42,446 | $145,197 |
| Mean household income | $228,565 ±$36,902 | $171,148 |
| Per capita income | $86,918 ±$13,912 | $62,170 |
| People below the poverty line | 2.8% ±3.2 pts | 3.8% |
| Children under 18 below the poverty line | 7.5% ±11.0 pts | 2.9% |
| Households receiving SNAP | 6.0% ±4.6 pts | 3.0% |
| Households with a computer | 100.0% ±3.9 pts | 98.4% |
| Households with a broadband subscription | 96.9% ±2.6 pts | 97.7% |
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 Census Tract 140.17?
Owners occupy 77.0% of Census Tract 140.17's occupied homes and renters 23.0%. The median owner-occupied home is valued at $848,800 by its owner (±$64,899). The median renter pays $2,247 a month including utilities, and 56.9% of renters pay 35% or more of their income on rent.
| Measure | Tract 140.17 | Castle Rock |
|---|---|---|
| Median home value (owner-occupied) | $848,800 ±$64,899 | $652,900 |
| Median gross rent | $2,247 ±$262 | $2,000 |
| Renters paying 35% or more of income on rent | 56.9% ±19.3 pts | 51.1% |
| Median monthly owner costs, with a mortgage | $3,105 ±$818 | $2,787 |
| Owner-occupied homes | 77.0% ±8.1 pts | 78.8% |
| Renter-occupied homes | 23.0% ±8.1 pts | 21.2% |
| Housing units | 1,180 ±116 | 29,159 |
| Single-family detached homes | 63.1% ±9.1 pts | 73.7% |
| Mobile homes | 0.0% ±3.5 pts | 0.5% |
| Built 2020 or later | 1.1% ±1.6 pts | 8.3% |
| Built 2010 to 2019 | 12.8% ±5.8 pts | 30.8% |
| Built 1939 or earlier | 0.0% ±3.5 pts | 0.3% |
| Households with no vehicle | 4.2% ±5.6 pts | 2.3% |
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 140.17 get to work?
55.3% of Census Tract 140.17's workers drive alone and 31.9% work from home. The average trip to work takes 29.6 minutes.
| Measure | Tract 140.17 | Castle Rock |
|---|---|---|
| In the labor force (age 16+) | 62.3% ±6.3 pts | 74.6% |
| Unemployment rate | 2.5% ±2.2 pts | 4.4% |
| Drove alone to work | 55.3% ±7.5 pts | 62.9% |
| Carpooled | 9.0% ±6.2 pts | 5.3% |
| Public transportation | 3.2% ±4.8 pts | 0.1% |
| Walked | 0.5% ±1.6 pts | 1.7% |
| Worked from home | 31.9% ±7.9 pts | 28.8% |
| Mean travel time to work | 29.6 min ±4.8 | 28.6 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 140.17 compare with the other tracts in Douglas County?
Among Douglas County's tracts with a reliable estimate, Census Tract 140.17 ranks as shown below (1 = highest).
| Measure | In Douglas County | In Castle Rock |
|---|---|---|
| Population | 61st of 72 | 13th of 13 |
| Residents per square mile | 48th of 72 | 8th of 13 |
| Median household income | 31st of 72 | 5th of 13 |
| Per capita income | 9th of 72 | 1st of 13 |
| Median home value | 15th of 72 | 3rd of 13 |
| Median gross rent | 38th of 64 | 7th of 13 |
| Bachelor's degree or higher | 51st of 72 | 9th of 13 |
| Median age | 17th of 72 | 2nd of 13 |
| Owner-occupied share | 49th of 72 | 8th of 13 |
The tracts next to it on Douglas County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 141.13 | 28th | $166,250±$17,371 · within the margin of this tract |
| Tract 140.11 | 29th | $165,339±$25,323 · within the margin of this tract |
| Tract 146.04 | 30th | $164,688±$13,877 · within the margin of this tract |
| Tract 140.17 | 31st | $161,250±$42,446 |
| Tract 146.02 | 32nd | $160,298±$26,974 · within the margin of this tract |
| Tract 141.28 | 33rd | $159,926±$25,031 · within the margin of this tract |
| Tract 142.06 | 34th | $159,063±$32,757 · 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 140.17?
3 of the 18 figures for Census Tract 140.17 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