Find the last 4 digits (ZIP+4) for an address in 81621

ZIP 81621, Basalt, CO is filled in. Just type the street address.

Addresses are checked through our secure proxy. Bot checks use Cloudflare Turnstile. Each device can run 5 live checks per day; repeats of the same address are free.

ZIP Code 81621 – Basalt, CO

Basalt, Colorado · Eagle County · Mountain time

ZIP code81621
CityBasalt
StateColorado
CountyEagle CountyPitkin County
Population6,550
Time zoneMountain · local time
ZIP typeStandard (has a Census ZCTA area)
Land area258.7 sq mi
Center (lat, long)39.3781, -106.8764

Area codes in this area

970

These are the area codes that most often serve ZIP 81621 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

81656 Woody Creek · 8.3 mi81615 Snowmass Village · 11.9 mi81654 Snowmass · 14.9 mi81642 Meredith · 17.1 mi81623 Carbondale · 17.8 mi81631 Eagle · 18 mi81611 Aspen · 18.8 mi81632 Edwards · 22.2 mi

About ZIP 81621

ZIP code 81621 is assigned to Basalt, Colorado. It crosses 2 counties; most of its land is in Eagle County. Its Census area covers about 258.7 square miles of land. The closest neighboring ZIP is 81656 (Woody Creek), about 8.3 miles away.

Every address in 81621 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources