Below is a list of Stockton IA zip codes. For your research we have also included Stockton Area Code, Time Zone, UTC and the local Muscatine County FIPS Code. Each Stockton Iowa zip code has a center Longitude / Latitude point (the Stockton center is -90.856597900391 / 41.590999603271). For your convenience we have also indicated if that zip code in Stockton observes Daylight Savings time.