Find the last 4 digits (ZIP+4) for an address in 80540

ZIP 80540, Lyons, CO is filled in. Just type the street address.

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ZIP Code 80540 – Lyons, CO

Lyons, Colorado · Boulder County · Mountain time

ZIP code80540
CityLyons
StateColorado
CountyBoulder CountyLarimer County
Population4,642
Time zoneMountain · local time
ZIP typeStandard (has a Census ZCTA area)
Land area152.76 sq mi
Center (lat, long)40.2246, -105.4005

Area codes in this area

970

These are the area codes that most often serve ZIP 80540 (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

80306 Boulder · 8.5 mi80455 Jamestown · 8.9 mi80533 Hygiene · 9.3 mi80307 Boulder · 9.5 mi80314 Boulder · 9.5 mi80503 Longmont · 10.7 mi80510 Allenspark · 10.9 mi80481 Ward · 12.6 mi

About ZIP 80540

ZIP code 80540 is assigned to Lyons, Colorado. It crosses 2 counties; most of its land is in Boulder County. Its Census area covers about 152.76 square miles of land. The closest neighboring ZIP is 80306 (Boulder), about 8.5 miles away.

Every address in 80540 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