Longmont, CO ZIP Codes

Total ZIPs

117,461

Total Population

ZIP Codes in Longmont, CO

ZIP Code	Population	Density	Timezone
80504	46,876	183	America/Denver
80501	39,521	1,233	America/Denver
80503	31,064	132	America/Denver

All data sourced from the U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023).

PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.