Below is a list of Smithshire IL zip codes. For your research we have also included Smithshire Area Code, Time Zone, UTC and the local Warren County FIPS Code. Each Smithshire Illinois zip code has a center Longitude / Latitude point (the Smithshire center is -90.778800964355 / 40.791900634766). For your convenience we have also indicated if that zip code in Smithshire observes Daylight Savings time.