ZIP code · Coal Creek · Colorado · United States

ZIP code 81221 — Coal Creek

ZIP code 81221 serves Coal Creek, Colorado.

Postal code
81221
Single source Value from one source, not cross-checked.
City
Coal Creek
County
Fremont FIPS 08043
State
Colorado
Country
United States
Coordinates
38.3611, -105.1483 — precision precise (locality)
View on OpenStreetMap
Population
360 (ZCTA, ACS 5-year)
Population density
314 / sq mi
Land area
1.1 sq mi (3 km²) (ZCTA, ACS 5-year)
Median household income
$41,000
Per-capita income
$28,223
Median age
42
Households
132
Housing units
146
Median home value
$205,300
Median gross rent
$1,125 / month
Congressional district
CO-7 (119th Congress)
USDA hardiness zone
6a (-10 to -5 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/Denver (UTC−7 / UTC−6 DST)
Area code
719 (from the nearest rate centre)
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 89°F), coldest Jan (avg low 18°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F495059647385898780695749
Avg low °F182026334352595748362619
Precip in0.60.61.01.81.60.82.32.11.20.90.60.5

NOAA 1991–2020 climate normals from the nearest station: CANON CITY (8.0 mi) · NOAA NCEI

Places in ZIP 81221

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page