Below is a list of Okawville IL zip codes. For your research we have also included Okawville Area Code, Time Zone, UTC and the local Washington County FIPS Code. Each Okawville Illinois zip code has a center Longitude / Latitude point (the Okawville center is -89.550598144531 / 38.430599212646). For your convenience we have also indicated if that zip code in Okawville observes Daylight Savings time.