ZIP Code 51003
Alton, Iowa · Sioux County
No22690
Zip51003
TypeSTANDARD
Decommissioned0
Primary CityAlton
Acceptable Cities—
Unacceptable CitiesCarnes
StateIA
LstateIowa
CountySioux County
TimezoneAmerica/Chicago
Area Codes712
World RegionNA
CountryUS
Latitude42,98
Longitude-96