ZIP Code 51111
Sioux City, Iowa · Woodbury County
No22751
Zip51111
TypeSTANDARD
Decommissioned0
Primary CitySioux City
Acceptable Cities—
Unacceptable Cities—
StateIA
LstateIowa
CountyWoodbury County
TimezoneAmerica/Chicago
Area Codes402, 531, 712
World RegionNA
CountryUS
Latitude42,42
Longitude-96,39