Below is a list of Chesterfield IL zip codes. For your research we have also included Chesterfield Area Code, Time Zone, UTC and the local Macoupin County FIPS Code. Each Chesterfield Illinois zip code has a center Longitude / Latitude point (the Chesterfield center is -90.064598083496 / 39.256801605225). For your convenience we have also indicated if that zip code in Chesterfield observes Daylight Savings time.