Below is a list of Hawarden IA zip codes. For your research we have also included Hawarden Area Code, Time Zone, UTC and the local Sioux County FIPS Code. Each Hawarden Iowa zip code has a center Longitude / Latitude point (the Hawarden center is -96.487899780273 / 43.002300262451). For your convenience we have also indicated if that zip code in Hawarden observes Daylight Savings time.