Census tract · Arapahoe County
Census Tract 66.01, Arapahoe County, Colorado
Census Tract 66.01, GEOID 08005006601, in Arapahoe County, Colorado, mostly within Littleton (91% of its census blocks). 5,201 residents in the ACS 2020-2024 5-year estimates (±741); the 2020 Census counted 5,531.
Residents, 2020-2024
5,201
±741 (90% margin)
2020 Census count: 5,531
Median household income
$64,678
±$14,175 (90% margin)
Arapahoe County: $101,087
Median home value
$379,300
±$97,690 (90% margin)
Arapahoe County: $561,200
Median gross rent
$1,493
±$111 (90% margin)
Arapahoe County: $1,891
Where is Census Tract 66.01?
Census Tract 66.01 is one of 161 census tracts in Arapahoe County, Colorado. It covers 0.75 square miles of land, 7,385 residents per square mile in 2020. Its GEOID, 08005006601, names it uniquely (how tract numbers and GEOIDs work).
4 census tracts border Census Tract 66.01: Tract 56.12 ($109,750), Tract 64 ($71,667), Tract 65.02 ($86,328) and Tract 66.04 ($73,983). 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 66.01?
The 2020-2024 American Community Survey puts Census Tract 66.01's population at 5,201 (±741) in 2,549 households; the 2020 Census counted 5,531 residents and 2,672 housing units.
| Measure | Tract 66.01 | Littleton |
|---|---|---|
| Total population | 5,201 ±741 | 44,710 |
| Households | 2,549 ±353 | 20,449 |
| Average household size | 1.98 ±0.22 | 2.16 |
| Housing units | 2,779 ±329 | 21,606 |
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 66.01?
The median resident of Census Tract 66.01 is 36.8 years old; 18.1% are under 18 and 12.8% are 65 or older. The largest group is non-Hispanic white residents at 63.9%, then Hispanic or Latino residents (of any race) at 27.0%. 17.8% of residents were born outside the United States.
| Measure | Tract 66.01 | Littleton |
|---|---|---|
| Median age | 36.8 ±6.6 | 40.8 |
| Under 18 years | 18.1% ±5.3 pts | 18.4% |
| 65 years and over | 12.8% ±3.9 pts | 20.1% |
| Hispanic or Latino (any race) | 27.0% ±10.5 pts | 13.3% |
| White alone, not Hispanic | 63.9% ±10.4 pts | 77.4% |
| Black or African American alone, not Hispanic | 1.6% ±1.7 pts | 1.9% |
| Asian alone, not Hispanic | 2.2% ±1.8 pts | 2.4% |
| American Indian and Alaska Native alone, not Hispanic | 0.2% ±0.5 pts | 0.2% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.8 pts | 0.1% |
| Two or more races, not Hispanic | 4.9% ±3.5 pts | 4.4% |
| Some other race alone, not Hispanic | 0.2% ±0.4 pts | 0.3% |
| Born outside the United States | 17.8% ±7.9 pts | 7.2% |
| Speak a language other than English at home (age 5+) | 22.3% ±10.7 pts | 9.9% |
| Civilian veterans (age 18+) | 3.1% ±2.8 pts | 5.0% |
| With a disability | 11.0% ±5.8 pts | 12.4% |
| No health insurance coverage | 21.7% ±9.9 pts | 6.7% |
| High school graduate or higher (age 25+) | 91.3% ±6.7 pts | 96.3% |
| Bachelor's degree or higher (age 25+) | 37.2% ±9.4 pts | 56.8% |
| Graduate or professional degree (age 25+) | 14.3% ±9.9 pts | 21.5% |
| Lived in the same house a year earlier | 87.6% ±5.7 pts | 83.5% |
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 66.01 earn?
Half of the 2,549 households in Census Tract 66.01 earn less than $64,678 a year (±$14,175), against $101,087 across Arapahoe County: 145th highest of the county's 159 tracts with a reliable estimate. 9.1% of residents live below the poverty line.
| Measure | Tract 66.01 | Littleton |
|---|---|---|
| Median household income | $64,678 ±$14,175 | $98,839 |
| Mean household income | $77,307 ±$14,919 | $130,387 |
| Per capita income | $41,531 ±$10,322 | $60,507 |
| People below the poverty line | 9.1% ±5.3 pts | 6.1% |
| Children under 18 below the poverty line | 7.5% ±10.1 pts | 3.9% |
| Households receiving SNAP | 11.1% ±7.1 pts | 5.9% |
| Households with a computer | 98.0% ±2.3 pts | 96.8% |
| Households with a broadband subscription | 96.8% ±3.2 pts | 94.9% |
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 66.01?
Owners occupy 33.7% of Census Tract 66.01's occupied homes and renters 66.3%. The median owner-occupied home is valued at $379,300 by its owner (±$97,690). The median renter pays $1,493 a month including utilities, and 51.4% of renters pay 35% or more of their income on rent.
| Measure | Tract 66.01 | Littleton |
|---|---|---|
| Median home value (owner-occupied) | $379,300 ±$97,690 | $630,600 |
| Median gross rent | $1,493 ±$111 | $1,819 |
| Renters paying 35% or more of income on rent | 51.4% ±14.9 pts | 48.1% |
| Median monthly owner costs, with a mortgage | $2,113 ±$491 | $2,437 |
| Owner-occupied homes | 33.7% ±9.0 pts | 61.2% |
| Renter-occupied homes | 66.3% ±9.0 pts | 38.8% |
| Housing units | 2,779 ±329 | 21,606 |
| Single-family detached homes | 32.6% ±8.8 pts | 48.5% |
| Mobile homes | 0.0% ±1.5 pts | 1.6% |
| Built 2020 or later | 0.0% ±1.5 pts | 1.3% |
| Built 2010 to 2019 | 0.0% ±1.5 pts | 8.8% |
| Built 1939 or earlier | 11.7% ±7.3 pts | 3.3% |
| Households with no vehicle | 8.6% ±6.9 pts | 5.3% |
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 66.01 get to work?
73.3% of Census Tract 66.01's workers drive alone and 16.0% work from home. The average trip to work takes 22.0 minutes.
| Measure | Tract 66.01 | Littleton |
|---|---|---|
| In the labor force (age 16+) | 75.5% ±6.8 pts | 69.9% |
| Unemployment rate | 4.8% ±3.9 pts | 3.8% |
| Drove alone to work | 73.3% ±8.8 pts | 65.3% |
| Carpooled | 2.7% ±2.7 pts | 5.0% |
| Public transportation | 4.9% ±5.5 pts | 2.9% |
| Walked | 1.2% ±1.4 pts | 1.5% |
| Worked from home | 16.0% ±7.5 pts | 23.2% |
| Mean travel time to work | 22.0 min ±4.0 | 25.1 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 66.01 compare with the other tracts in Arapahoe County?
Among Arapahoe County's tracts with a reliable estimate, Census Tract 66.01 ranks as shown below (1 = highest).
| Measure | In Arapahoe County | In Littleton |
|---|---|---|
| Population | 34th of 160 | 1st of 13 |
| Residents per square mile | 36th of 161 | 1st of 13 |
| Median household income | 145th of 159 | 13th of 13 |
| Per capita income | 108th of 160 | 13th of 13 |
| Median home value | 143rd of 158 | 13th of 13 |
| Median gross rent | 137th of 146 | 11th of 11 |
| Poverty rate | 52nd of 90 | 2nd of 8 |
| Bachelor's degree or higher | 107th of 161 | 13th of 13 |
| Median age | 86th of 160 | 12th of 13 |
| Owner-occupied share | 140th of 159 | 12th of 13 |
The tracts next to it on Arapahoe County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 810.02 | 142nd | $65,989±$11,916 · within the margin of this tract |
| Tract 869 | 143rd | $65,924±$12,240 · within the margin of this tract |
| Tract 821 | 144th | $65,625±$14,363 · within the margin of this tract |
| Tract 66.01 | 145th | $64,678±$14,175 |
| Tract 806 | 146th | $64,494±$9,048 · within the margin of this tract |
| Tract 871 | 147th | $62,545±$8,013 · within the margin of this tract |
| Tract 801 | 148th | $62,500±$27,890 · 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 66.01?
2 of the 18 figures for Census Tract 66.01 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