ZIP code · Coal Creek · Colorado · United States
ZIP code 81221 — Coal Creek
ZIP code 81221 serves Coal Creek, Colorado.
- Postal code
- 81221Single 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.
Tools: compare 81221 with another ZIP · ZIPs within 25 miles · distance from 81221
Map of ZIP code 81221
Climate — monthly normals
Warmest month Jul (avg high 89°F), coldest Jan (avg low 18°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 49 | 50 | 59 | 64 | 73 | 85 | 89 | 87 | 80 | 69 | 57 | 49 |
| Avg low °F | 18 | 20 | 26 | 33 | 43 | 52 | 59 | 57 | 48 | 36 | 26 | 19 |
| Precip in | 0.6 | 0.6 | 1.0 | 1.8 | 1.6 | 0.8 | 2.3 | 2.1 | 1.2 | 0.9 | 0.6 | 0.5 |
NOAA 1991–2020 climate normals from the nearest station: CANON CITY (8.0 mi) · NOAA NCEI
Places in ZIP 81221
- 1 post offices
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