Below is a list of Sioux County NE zip codes. For your research we have also included Sioux County Area Code, Time Zone, UTC and the local County FIPS Code. Each Sioux County Nebraska zip code has a center Longitude / Latitude point (the Sioux County center is -103.85500335693 / 42.691101074219). For your convenience we have also indicated if that zip code in Sioux County observes Daylight Savings time.