Census tract · Douglas County
Census Tract 139.12, Douglas County, Colorado
Census Tract 139.12, GEOID 08035013912, in Douglas County, Colorado, partly within Parker and Aurora. 9,020 residents in the ACS 2020-2024 5-year estimates (±1,160); the 2020 Census counted 7,399.
Residents, 2020-2024
9,020
±1,160 (90% margin)
2020 Census count: 7,399
Median household income
$129,896
±$33,403 (90% margin)
Douglas County: $149,594
Median home value
$848,200
±$61,028 (90% margin)
Douglas County: $713,600
Median gross rent
$1,887
±$144 (90% margin)
Douglas County: $2,193
Where is Census Tract 139.12?
Census Tract 139.12 is one of 72 census tracts in Douglas County, Colorado. It covers 10.54 square miles of land, 702 residents per square mile in 2020. Its GEOID, 08035013912, names it uniquely (how tract numbers and GEOIDs work).
9 census tracts border Census Tract 139.12: Tract 865 in Arapahoe County ($119,500), Tract 866 in Arapahoe County ($112,237), Tract 139.04 ($95,288), Tract 139.05 ($93,750), Tract 139.10 ($173,933), Tract 139.11 ($177,614), Tract 139.13 ($199,028), Tract 140.10 ($110,339) and Tract 140.15 ($92,961). 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 139.12?
The 2020-2024 American Community Survey puts Census Tract 139.12's population at 9,020 (±1,160) in 3,225 households; the 2020 Census counted 7,399 residents and 3,179 housing units.
| Measure | Tract 139.12 | Douglas County |
|---|---|---|
| Total population | 9,020 ±1,160 | 377,150 |
| Households | 3,225 ±227 | 139,960 |
| Average household size | 2.77 ±0.31 | 2.69 |
| Housing units | 3,391 ±259 | 144,432 |
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 139.12?
The median resident of Census Tract 139.12 is 40.1 years old; 23.5% are under 18 and 16.5% are 65 or older. The largest group is non-Hispanic white residents at 66.2%, then Hispanic or Latino residents (of any race) at 15.7%. 16.8% of residents were born outside the United States.
| Measure | Tract 139.12 | Douglas County |
|---|---|---|
| Median age | 40.1 ±5.0 | 39.6 |
| Under 18 years | 23.5% ±7.6 pts | 23.4% |
| 65 years and over | 16.5% ±3.9 pts | 13.9% |
| Hispanic or Latino (any race) | 15.7% ±6.5 pts | 10.2% |
| White alone, not Hispanic | 66.2% ±9.3 pts | 77.0% |
| Black or African American alone, not Hispanic | 1.8% ±1.5 pts | 1.3% |
| Asian alone, not Hispanic | 10.5% ±7.8 pts | 5.8% |
| American Indian and Alaska Native alone, not Hispanic | 0.4% ±0.4 pts | 0.2% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.5 pts | 0.1% |
| Two or more races, not Hispanic | 5.1% ±3.1 pts | 4.9% |
| Some other race alone, not Hispanic | 0.2% ±0.3 pts | 0.5% |
| Born outside the United States | 16.8% ±4.3 pts | 8.4% |
| Speak a language other than English at home (age 5+) | 15.3% ±6.2 pts | 10.4% |
| Civilian veterans (age 18+) | 7.8% ±2.6 pts | 7.2% |
| With a disability | 12.0% ±3.6 pts | 8.1% |
| No health insurance coverage | 2.7% ±2.4 pts | 3.9% |
| High school graduate or higher (age 25+) | 91.1% ±4.6 pts | 97.9% |
| Bachelor's degree or higher (age 25+) | 55.1% ±6.5 pts | 62.0% |
| Graduate or professional degree (age 25+) | 18.6% ±4.2 pts | 22.5% |
| Lived in the same house a year earlier | 74.2% ±10.3 pts | 85.1% |
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 139.12 earn?
Half of the 3,225 households in Census Tract 139.12 earn less than $129,896 a year (±$33,403), against $149,594 across Douglas County: 52nd highest of the county's 72 tracts with a reliable estimate.
| Measure | Tract 139.12 | Douglas County |
|---|---|---|
| Median household income | $129,896 ±$33,403 | $149,594 |
| Mean household income | $189,360 ±$38,241 | $183,544 |
| Per capita income | $68,670 ±$9,278 | $69,608 |
| People below the poverty line | 6.2% ±4.3 pts | 3.8% |
| Children under 18 below the poverty line | 7.1% ±7.4 pts | 3.0% |
| Households receiving SNAP | 3.6% ±3.1 pts | 2.1% |
| Households with a computer | 99.4% ±0.9 pts | 98.9% |
| Households with a broadband subscription | 97.0% ±2.5 pts | 97.9% |
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 139.12?
Owners occupy 65.2% of Census Tract 139.12's occupied homes and renters 34.8%. The median owner-occupied home is valued at $848,200 by its owner (±$61,028). The median renter pays $1,887 a month including utilities, and 41.8% of renters pay 35% or more of their income on rent.
| Measure | Tract 139.12 | Douglas County |
|---|---|---|
| Median home value (owner-occupied) | $848,200 ±$61,028 | $713,600 |
| Median gross rent | $1,887 ±$144 | $2,193 |
| Renters paying 35% or more of income on rent | 41.8% ±15.7 pts | 41.2% |
| Median monthly owner costs, with a mortgage | $2,780 ±$232 | $2,893 |
| Owner-occupied homes | 65.2% ±6.0 pts | 77.4% |
| Renter-occupied homes | 34.8% ±6.0 pts | 22.6% |
| Housing units | 3,391 ±259 | 144,432 |
| Single-family detached homes | 66.2% ±6.2 pts | 73.4% |
| Mobile homes | 0.0% ±1.2 pts | 0.3% |
| Built 2020 or later | 12.8% ±3.2 pts | 6.0% |
| Built 2010 to 2019 | 24.5% ±5.5 pts | 21.0% |
| Built 1939 or earlier | 0.0% ±1.2 pts | 0.5% |
| Households with no vehicle | 6.4% ±3.9 pts | 2.4% |
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 139.12 get to work?
57.4% of Census Tract 139.12's workers drive alone and 31.1% work from home. The average trip to work takes 27.6 minutes.
| Measure | Tract 139.12 | Douglas County |
|---|---|---|
| In the labor force (age 16+) | 64.6% ±5.6 pts | 71.9% |
| Unemployment rate | 0.0% ±0.9 pts | 3.6% |
| Drove alone to work | 57.4% ±6.8 pts | 61.9% |
| Carpooled | 8.2% ±5.2 pts | 4.9% |
| Public transportation | 1.7% ±1.6 pts | 0.6% |
| Walked | 0.9% ±1.4 pts | 1.2% |
| Worked from home | 31.1% ±5.8 pts | 30.5% |
| Mean travel time to work | 27.6 min ±3.9 | 27.1 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 139.12 compare with the other tracts in Douglas County?
Among Douglas County's tracts with a reliable estimate, Census Tract 139.12 ranks as shown below (1 = highest).
| Measure | In Douglas County |
|---|---|
| Population | 5th of 72 |
| Residents per square mile | 53rd of 72 |
| Median household income | 52nd of 72 |
| Per capita income | 39th of 72 |
| Median home value | 16th of 72 |
| Median gross rent | 55th of 64 |
| Bachelor's degree or higher | 55th of 72 |
| Median age | 36th of 72 |
| Owner-occupied share | 57th of 72 |
The tracts next to it on Douglas County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 141.25 | 49th | $139,222±$35,220 · within the margin of this tract |
| Tract 142.07 | 50th | $134,567±$29,290 · within the margin of this tract |
| Tract 139.07 | 51st | $131,155±$18,292 · within the margin of this tract |
| Tract 139.12 | 52nd | $129,896±$33,403 |
| Tract 141.45 | 53rd | $128,990±$25,002 · within the margin of this tract |
| Tract 141.16 | 54th | $127,593±$9,605 · within the margin of this tract |
| Tract 141.14 | 55th | $127,250±$20,602 · 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 139.12?
3 of the 18 figures for Census Tract 139.12 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