Below is a list of Plainville IL zip codes. For your research we have also included Plainville Area Code, Time Zone, UTC and the local Adams County FIPS Code. Each Plainville Illinois zip code has a center Longitude / Latitude point (the Plainville center is -91.185203552246 / 39.784301757812). For your convenience we have also indicated if that zip code in Plainville observes Daylight Savings time.