Waterloo, IA zip codes
Waterloo, Iowa has 4 zip codes (3 residential, 1 PO box or single-organization). Most of it is in Black Hawk County. Together these zip codes are home to about 69K people.
Zip codes
4
Population
69K
All zips combined
Largest zip
50701
30,232 residents
Income range
$50K–$62K
Median by zip