Census tract · Arapahoe County
Census Tract 56.21, Arapahoe County, Colorado
Census Tract 56.21, GEOID 08005005621, in Arapahoe County, Colorado, mostly within Columbine (64% of its census blocks). 2,821 residents in the ACS 2020-2024 5-year estimates (±204); the 2020 Census counted 3,026.
Residents, 2020-2024
2,821
±204 (90% margin)
2020 Census count: 3,026
Median household income
$150,083
±$11,872 (90% margin)
Arapahoe County: $101,087
Median home value
$918,500
±$85,054 (90% margin)
Arapahoe County: $561,200
Median gross rent
$3,240
±$805 (90% margin)
Arapahoe County: $1,891
Where is Census Tract 56.21?
Census Tract 56.21 is one of 161 census tracts in Arapahoe County, Colorado. It covers 1.00 square miles of land, 3,020 residents per square mile in 2020. Its GEOID, 08005005621, names it uniquely (how tract numbers and GEOIDs work).
5 census tracts border Census Tract 56.21: Tract 56.19 ($131,574), Tract 56.22 ($178,854), Tract 120.49 in Jefferson County ($170,592), Tract 120.51 in Jefferson County ($169,000) and Tract 120.53 in Jefferson County ($137,623). 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 56.21?
The 2020-2024 American Community Survey puts Census Tract 56.21's population at 2,821 (±204) in 1,080 households; the 2020 Census counted 3,026 residents and 1,134 housing units.
| Measure | Tract 56.21 | Columbine |
|---|---|---|
| Total population | 2,821±204 | 25,478 |
| Households | 1,080±92 | 9,511 |
| Average household size | 2.53±0.16 | 2.65 |
| Housing units | 1,164±89 | 9,809 |
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 56.21?
The median resident of Census Tract 56.21 is 48.7 years old; 23.0% are under 18 and 24.9% are 65 or older. The largest group is non-Hispanic white residents at 80.2%, then Hispanic or Latino residents (of any race) at 16.1%. 4.0% of residents were born outside the United States.
| Measure | Tract 56.21 | Columbine |
|---|---|---|
| Median age | 48.7±3.7 | 40.6 |
| Under 18 years | 23.0%±3.0 pts | 23.0% |
| 65 years and over | 24.9%±4.0 pts | 20.1% |
| Hispanic or Latino (any race) | 16.1%±6.0 pts | 11.9% |
| White alone, not Hispanic | 80.2%±6.1 pts | 82.5% |
| Black or African American alone, not Hispanic | 0.0%±1.5 pts | 0.5% |
| Asian alone, not Hispanic | 1.2%±1.3 pts | 1.4% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±1.5 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±1.5 pts | 0.0% |
| Two or more races, not Hispanic | 2.5%±1.7 pts | 3.4% |
| Some other race alone, not Hispanic | 0.0%±1.5 pts | 0.3% |
| Born outside the United States | 4.0%±2.3 pts | 3.3% |
| Speak a language other than English at home (age 5+) | 5.8%±2.9 pts | 5.0% |
| Civilian veterans (age 18+) | 6.1%±3.0 pts | 8.2% |
| With a disability | 11.6%±3.1 pts | 11.0% |
| No health insurance coverage | 1.0%±1.0 pts | 2.5% |
| High school graduate or higher (age 25+) | 97.5%±3.0 pts | 97.3% |
| Bachelor's degree or higher (age 25+) | 59.7%±6.6 pts | 53.2% |
| Graduate or professional degree (age 25+) | 27.3%±5.5 pts | 17.0% |
| Lived in the same house a year earlier | 91.1%±4.5 pts | 89.8% |
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 56.21 earn?
Half of the 1,080 households in Census Tract 56.21 earn less than $150,083 a year (±$11,872), against $101,087 across Arapahoe County: 28th highest of the county's 159 tracts with a reliable estimate.
| Measure | Tract 56.21 | Columbine |
|---|---|---|
| Median household income | $150,083±$11,872 | $131,232 |
| Mean household income | $198,528±$27,140 | $156,649 |
| Per capita income | $76,486±$10,185 | $59,385 |
| People below the poverty line | 2.8%±2.2 pts | 4.3% |
| Children under 18 below the poverty line | 0.0%±6.3 pts | 3.9% |
| Households receiving SNAP | 0.0%±3.9 pts | 3.4% |
| Households with a computer | 96.6%±4.1 pts | 98.4% |
| Households with a broadband subscription | 96.7%±4.0 pts | 97.2% |
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 56.21?
Owners occupy 90.7% of Census Tract 56.21's occupied homes and renters 9.3%. The median owner-occupied home is valued at $918,500 by its owner (±$85,054). The median renter pays $3,240 a month including utilities.
| Measure | Tract 56.21 | Columbine |
|---|---|---|
| Median home value (owner-occupied) | $918,500±$85,054 | $617,200 |
| Median gross rent | $3,240±$805 | $2,448 |
| Renters paying 35% or more of income on rent | 55.0%±40.6 pts | 60.0% |
| Median monthly owner costs, with a mortgage | $3,592±$290 | $2,593 |
| Owner-occupied homes | 90.7%±4.8 pts | 89.3% |
| Renter-occupied homes | 9.3%±4.8 pts | 10.7% |
| Housing units | 1,164±89 | 9,809 |
| Single-family detached homes | 73.5%±5.1 pts | 78.9% |
| Mobile homes | 0.0%±3.6 pts | 0.1% |
| Built 2020 or later | 0.0%±3.6 pts | 0.1% |
| Built 2010 to 2019 | 2.0%±2.1 pts | 1.1% |
| Built 1939 or earlier | 2.2%±2.0 pts | 0.7% |
| Households with no vehicle | 7.6%±4.9 pts | 4.0% |
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 56.21 get to work?
57.0% of Census Tract 56.21's workers drive alone and 26.4% work from home. The average trip to work takes 29.0 minutes. The unemployment rate in 2020-2024 averaged 6.0%.
| Measure | Tract 56.21 | Columbine |
|---|---|---|
| In the labor force (age 16+) | 58.4%±5.4 pts | 67.5% |
| Unemployment rate | 6.0%±2.6 pts | 4.1% |
| Drove alone to work | 57.0%±7.4 pts | 68.6% |
| Carpooled | 10.4%±5.1 pts | 6.5% |
| Public transportation | 3.2%±2.7 pts | 0.4% |
| Walked | 0.0%±3.4 pts | 0.9% |
| Worked from home | 26.4%±7.1 pts | 22.4% |
| Mean travel time to work | 29.0 min±4.7 | 26.4 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 56.21 compare with the other tracts in Arapahoe County?
Among Arapahoe County's tracts with a reliable estimate, Census Tract 56.21 ranks as shown below (1 = highest).
| Measure | In Arapahoe County | In Columbine |
|---|---|---|
| Population | 125th of 160 | 6th of 7 |
| Residents per square mile | 128th of 161 | 6th of 7 |
| Median household income | 28th of 159 | 3rd of 7 |
| Per capita income | 19th of 160 | 1st of 7 |
| Median home value | 13th of 158 | 1st of 7 |
| Median gross rent | 8th of 146 | 1st of 5 |
| Bachelor's degree or higher | 48th of 161 | 2nd of 7 |
| Median age | 12th of 160 | 2nd of 7 |
| Owner-occupied share | 28th of 159 | 4th of 7 |
The tracts next to it on Arapahoe County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 58 | 25th | $160,561±$29,384 · within the margin of this tract |
| Tract 830 | 26th | $155,256±$12,392 · within the margin of this tract |
| Tract 71.03 | 27th | $153,021±$10,364 · within the margin of this tract |
| Tract 56.21 | 28th | $150,083±$11,872 |
| Tract 859 | 29th | $149,504±$15,479 · within the margin of this tract |
| Tract 56.35 | 30th | $146,932±$28,070 · within the margin of this tract |
| Tract 56.24 | 31st | $143,882±$16,171 · 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 56.21?
3 of the 18 figures for Census Tract 56.21 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