Quincy, IL zip codes
Quincy, Illinois has 3 zip codes (2 residential, 1 PO box or single-organization). Most of it is in Adams County. Together these zip codes are home to about 50K people.
Zip codes
3
Population
50K
All zips combined
Largest zip
62301
30,746 residents
Income range
$52K–$84K
Median by zip