Find the last 4 digits (ZIP+4) for an address in 80504

ZIP 80504, Longmont, CO is filled in. Just type the street address.

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ZIP Code 80504 – Longmont, CO

Longmont, Colorado · Weld County · Mountain time

ZIP code80504
CityLongmont
StateColorado
CountyWeld CountyBoulder CountyLarimer County
Population63,451
Time zoneMountain · local time
ZIP typeStandard (has a Census ZCTA area)
Land area94.58 sq mi
Center (lat, long)40.1656, -105.0292

Area codes in this area

303720983

These are the area codes that most often serve ZIP 80504 (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

80501 Longmont · 3.8 mi80502 Longmont · 3.8 mi80542 Mead · 5 mi80520 Firestone · 6.2 mi80530 Frederick · 7.1 mi80514 Dacono · 7.6 mi80516 Erie · 7.8 mi80544 Niwot · 8.7 mi

About ZIP 80504

ZIP code 80504 is assigned to Longmont, Colorado. It crosses 3 counties; most of its land is in Weld County. Its Census area covers about 94.58 square miles of land. The closest neighboring ZIP is 80501 (Longmont), about 3.8 miles away.

Every address in 80504 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