Find the last 4 digits (ZIP+4) for an address in 80027

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ZIP Code 80027 – Louisville, CO

Louisville, Colorado · Boulder County · Mountain time

ZIP code80027
CityLouisville
StateColorado
CountyBoulder County
Population34,127
Time zoneMountain · local time
ZIP typeStandard (has a Census ZCTA area)
Land area18.63 sq mi
Center (lat, long)39.9515, -105.1581

Area codes in this area

303720983

These are the area codes that most often serve ZIP 80027 (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

80303 Boulder · 3.1 mi80038 Broomfield · 4.3 mi80020 Broomfield · 4.7 mi80021 Broomfield · 4.8 mi80305 Boulder · 5.1 mi80026 Lafayette · 5.2 mi80007 Arvada · 6.2 mi80310 Boulder · 6.6 mi

About ZIP 80027

ZIP code 80027 is assigned to Louisville, Colorado. It lies in Boulder County. Its Census area covers about 18.63 square miles of land. The closest neighboring ZIP is 80303 (Boulder), about 3.1 miles away.

Every address in 80027 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