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Zip Code 81621 — Basalt, CO

81621 is a ZIP Code associated with Basalt, CO, located within Eagle. The postal region supports an estimated population of 6,550 residents across Data Pending housing units, with a population density of 9.8 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.378030, -106.877200)

Data MetricLocal Statistic
Postal / Zip Code81621
Primary CityBasalt
State / ProvinceCO
CountyEagle
Total Population6,550
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density9.8 people/sq mi
TimezoneAmerica/Denver

How 81621 Compares

MetricZIP 81621Eagle CountyCO State Average
Population6,55043,9635,862,421
Median IncomeData PendingN/AN/A
Population Density9.8 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 81656Woody Creek8.3 mi459N/A
Zip 81615Snowmass Village11.8 mi2,972N/A
Zip 81654Snowmass13.8 mi1,431N/A
Zip 81642Meredith16.3 mi15N/A
Zip 81611Aspen17.5 mi9,068N/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 →