Census-designated place · Colorado
Coal Creek, Boulder County, Colorado
Coal Creek, Boulder County, census-designated place, mostly in Jefferson County (61.6% of its 2020 residents), with parts in Boulder and Gilpin counties, Colorado. Coal Creek, Boulder County had 2,494 residents in the 2020 Census, a full count; the ACS 2020-2024 5-year estimates put it at 2,346 (±516). GEOID 0815302.
Residents, 2020 Census
2,494
Census count or controlled total
ACS 2020-2024 estimate: 2,346 ±516
Median household income
$134,250
±$29,093 (90% margin)
Colorado: $95,470
Median home value
$625,800
±$43,990 (90% margin)
Colorado: $539,400
Median gross rent
$1,868
±$1,053 (90% margin)
Colorado: $1,761
Where is Coal Creek, Boulder County and what county is it in?
Coal Creek, Boulder County is a census-designated place: an unincorporated community the Census Bureau draws for counting, with no city government of its own, mostly in Jefferson County (61.6% of its 2020 residents), with parts in Boulder and Gilpin counties, Colorado. It covers 9.4 square miles of land, 266 residents per square mile in 2020.
Coal Creek, Boulder County is in the Denver-Aurora-Centennial, CO metropolitan statistical area, which takes in 10 counties (Census Bureau delineation, July 2023).
| County | 2020 residents | Share |
|---|---|---|
| Jefferson County | 1,537 | 61.6% |
| Boulder County | 665 | 26.7% |
| Gilpin County | 292 | 11.7% |
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Coal Creek, Boulder County, and is it growing?
The 2020 Census counted 2,494 residents in Coal Creek, Boulder County, a full count rather than a sample. The 2020-2024 American Community Survey, a sample, estimates 2,346 (±516).
The Census Bureau publishes yearly population estimates for incorporated places only; Coal Creek, Boulder County is a census-designated place, so its figures come from the ACS and the 2020 Census.
| Measure | Coal Creek, Boulder County | Jefferson County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 2,346 ±516 | 579,377 | no clear change |
| Households | 1,138 ±244 | 241,735 | no clear change |
| Average household size | 2.06 ±0.18 | 2.36 | no clear change |
| Housing units | 1,260 ±252 | 253,574 | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Coal Creek, Boulder County?
The median resident of Coal Creek, Boulder County is 53.7 years old; 13.7% are under 18 and 20.8% are 65 or older. The largest group is non-Hispanic white residents at 91.6%, then Hispanic or Latino residents (of any race) at 4.9%. 4.7% of residents were born outside the United States.
| Measure | Coal Creek, Boulder County | Jefferson County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 53.7 ±7.0 | 40.5 | +8.6 |
| Under 18 years | 13.7% ±4.8 pts | 18.5% | – |
| 65 years and over | 20.8% ±8.7 pts | 17.9% | – |
| Male | 54.4% ±5.2 pts | 50.3% | – |
| Hispanic or Latino (any race) | 4.9% ±3.3 pts | 16.1% | – |
| White alone, not Hispanic | 91.6% ±4.5 pts | 75.2% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±1.8 pts | 1.1% | – |
| Asian alone, not Hispanic | 0.5% ±0.8 pts | 2.9% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.3% ±0.5 pts | 0.2% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.8 pts | 0.1% | – |
| Two or more races, not Hispanic | 2.8% ±2.8 pts | 4.0% | – |
| Some other race alone, not Hispanic | 0.0% ±1.8 pts | 0.4% | – |
| Born outside the United States | 4.7% ±2.1 pts | 6.3% | – |
| Speak a language other than English at home (age 5+) | 2.7% ±2.4 pts | 10.0% | – |
| Civilian veterans (age 18+) | 3.8% ±2.5 pts | 6.5% | – |
| With a disability | 9.0% ±4.3 pts | 11.0% | – |
| No health insurance coverage | 7.3% ±3.8 pts | 5.3% | – |
| High school graduate or higher (age 25+) | 98.9% ±1.4 pts | 95.8% | – |
| Bachelor's degree or higher (age 25+) | 58.1% ±11.2 pts | 52.0% | no clear change |
| Graduate or professional degree (age 25+) | 27.5% ±9.0 pts | 19.3% | – |
| Lived in the same house a year earlier | 90.9% ±5.8 pts | 85.8% | – |
| Moved from another state in the past year | 1.4% ±2.2 pts | 2.9% | – |
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 Coal Creek, Boulder County earn?
Half of Coal Creek, Boulder County's 1,138 households earn less than $134,250 a year (±$29,093), against $110,656 in Jefferson County and $95,470 in Colorado. In 2015-2019 it was $141,969 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Coal Creek, Boulder County | Jefferson County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $134,250 ±$29,093 | $110,656 | no clear change |
| Mean household income | $154,607 ±$27,221 | $142,995 | – |
| Per capita income | $70,469 ±$8,685 | $60,827 | no clear change |
| People below the poverty line | 5.4% ±3.9 pts | 6.7% | – |
| Children under 18 below the poverty line | 6.5% ±10.4 pts | 7.0% | – |
| Households receiving SNAP | 3.1% ±4.6 pts | 5.5% | – |
| Households with a computer | 100.0% ±3.7 pts | 97.6% | – |
| Households with a broadband subscription | 99.4% ±1.0 pts | 95.1% | – |
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 Coal Creek, Boulder County?
Owners occupy 90.9% of Coal Creek, Boulder County's occupied homes and renters 9.1%. The median owner-occupied home is valued at $625,800 by its owner (±$43,990). The median renter pays $1,868 a month including utilities.
| Measure | Coal Creek, Boulder County | Jefferson County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $625,800 ±$43,990 | $637,600 | +$141,276 |
| Median gross rent | $1,868 ±$1,053 | $1,861 | no clear change |
| Renters paying 35% or more of income on rent | 0.0% ±40.5 pts | 42.5% | – |
| Median monthly owner costs, with a mortgage | $2,487 ±$329 | $2,498 | – |
| Owner-occupied homes | 90.9% ±6.6 pts | 70.7% | no clear change |
| Renter-occupied homes | 9.1% ±6.6 pts | 29.3% | – |
| Housing units | 1,260 ±252 | 253,574 | no clear change |
| Homeowner vacancy rate | 0.0% ±4.0 pts | 0.6% | – |
| Rental vacancy rate | 15.4% ±24.9 pts | 4.9% | – |
| Single-family detached homes | 96.4% ±4.6 pts | 63.8% | – |
| Mobile homes | 0.0% ±3.3 pts | 0.8% | – |
| Built 2020 or later | 0.0% ±3.3 pts | 1.7% | – |
| Built 2010 to 2019 | 3.7% ±2.7 pts | 8.7% | – |
| Built 1939 or earlier | 6.1% ±4.7 pts | 2.8% | – |
| Households with no vehicle | 0.0% ±3.7 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 Coal Creek, Boulder County work and get to work?
79.9% of Coal Creek, Boulder County's workers drive alone and 15.3% work from home. The average trip to work takes 41.8 minutes.
| Measure | Coal Creek, Boulder County | Jefferson County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 64.1% ±9.1 pts | 69.3% | – |
| Unemployment rate | 2.4% ±2.5 pts | 3.9% | – |
| Drove alone to work | 79.9% ±6.1 pts | 64.4% | – |
| Carpooled | 1.8% ±2.0 pts | 5.7% | – |
| Public transportation | 0.0% ±3.3 pts | 1.3% | – |
| Walked | 0.0% ±3.3 pts | 1.4% | – |
| Worked from home | 15.3% ±5.8 pts | 25.4% | no clear change |
| Mean travel time to work | 41.8 min ±3.4 | 26.0 min | no clear change |
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 census tracts are in Coal Creek, Boulder County?
No census tract lies mostly in Coal Creek, Boulder County; 3 tracts reach into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 98.58Jefferson County | 3,617 | $145,600 |
| Tract 137.06Boulder County | 3,686 | $137,891 |
| Tract 138.02Gilpin County | 3,756 | $103,029 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Coal Creek, Boulder County) · Census block assignment files
How does Coal Creek, Boulder County compare with other places in Colorado?
Coal Creek, Boulder County ranks 34th of 218 places in Colorado with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population (ACS 2020-2024) | 166th | 220 |
| Residents per square mile | 204th | 221 |
| Median household income | 34th | 218 |
| Per capita income | 40th | 220 |
| Median home value | 73rd | 217 |
| Median gross rent | 64th | 200 |
| Bachelor's degree or higher | 54th | 216 |
| Median age | 12th | 220 |
| Owner-occupied share | 27th | 218 |
| Work from home | 109th | 176 |
| Travel time to work | 4th | 221 |
Coal Creek, Boulder County's figures with every place in Colorado (CSV)
Every place in Colorado, sortable · Compare Coal Creek, Boulder County with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Coal Creek, Boulder County?
25 of the 57 figures for Coal Creek, Boulder County 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.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. 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 · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Coal Creek, Boulder County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.