Below is a list of Shellsburg IA zip codes. For your research we have also included Shellsburg Area Code, Time Zone, UTC and the local Benton County FIPS Code. Each Shellsburg Iowa zip code has a center Longitude / Latitude point (the Shellsburg center is -91.873397827148 / 42.094501495361). For your convenience we have also indicated if that zip code in Shellsburg observes Daylight Savings time.