Longmont, CO zip codes
Longmont, Colorado has 4 zip codes (3 residential, 1 PO box or single-organization). Most of it is in Boulder County. Together these zip codes are home to about 143K people.
Zip codes
4
Population
143K
All zips combined
Largest zip
80504
63,451 residents
Income range
$81K–$114K
Median by zip