Below is a list of Ottosen IA zip codes. For your research we have also included Ottosen Area Code, Time Zone, UTC and the local Humboldt County FIPS Code. Each Ottosen Iowa zip code has a center Longitude / Latitude point (the Ottosen center is -94.375396728516 / 42.891799926758). For your convenience we have also indicated if that zip code in Ottosen observes Daylight Savings time.