Find the last 4 digits (ZIP+4) for an address in 80301

ZIP 80301, Boulder, CO is filled in. Just type the street address.

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ZIP Code 80301 – Boulder, CO

Boulder, Colorado · Boulder County · Mountain time

ZIP code80301
CityBoulder
StateColorado
CountyBoulder County
Population25,007
Time zoneMountain · local time
ZIP typeStandard (has a Census ZCTA area)
Land area28.65 sq mi
Center (lat, long)40.0457, -105.2009

Area codes in this area

303720983

These are the area codes that most often serve ZIP 80301 (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

80309 Boulder · 4.2 mi80544 Niwot · 4.3 mi80310 Boulder · 4.3 mi80304 Boulder · 4.6 mi80303 Boulder · 5 mi80305 Boulder · 5.4 mi80026 Lafayette · 5.8 mi80027 Louisville · 6.9 mi

About ZIP 80301

ZIP code 80301 is assigned to Boulder, Colorado. It lies in Boulder County. Its Census area covers about 28.65 square miles of land. The closest neighboring ZIP is 80309 (Boulder), about 4.2 miles away.

Every address in 80301 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