Below is a list of Keosauqua IA zip codes. For your research we have also included Keosauqua Area Code, Time Zone, UTC and the local Van Buren County FIPS Code. Each Keosauqua Iowa zip code has a center Longitude / Latitude point (the Keosauqua center is -91.959602355957 / 40.736198425293). For your convenience we have also indicated if that zip code in Keosauqua observes Daylight Savings time.