Longmont, CO

ZIP Codes in Longmont, Colorado

January 18, 2026

ZIP Code	Population	Coordinates
80501	43,222	40.1648, -105.1019
80502	--	40.0878, -105.3735
80503	36,235	40.1690, -105.2104
80504	60,527	40.1656, -105.0292

Longmont has 4 ZIP codes

« Colorado ZIP Codes All States »