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Zip Code 81221 — Coal Creek, CO

81221 is a ZIP Code associated with Coal Creek, CO, located within Fremont. The postal region supports an estimated population of 324 residents across Data Pending housing units, with a population density of 109.1 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (38.362430, -105.142380)

Data Metric	Local Statistic
Postal / Zip Code	81221
Primary City	Coal Creek
State / Province	CO
County	Fremont
Total Population	324
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	109.1 people/sq mi
Timezone	America/Denver

How 81221 Compares

Metric	ZIP 81221	Fremont County	CO State Average
Population	324	49,496	5,862,421
Median Income	Data Pending	N/A	N/A
Population Density	109.1 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 81244	Rockvale	1.2 mi	660	N/A
Zip 81226	Florence	3.5 mi	7,459	N/A
Zip 81240	Penrose	11.2 mi	4,800	N/A
Zip 81253	Wetmore	12.6 mi	524	N/A
Zip 81005	Pueblo	19.2 mi	32,441	N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →