Below is a list of Midlothian IL zip codes. For your research we have also included Midlothian Area Code, Time Zone, UTC and the local Cook County FIPS Code. Each Midlothian Illinois zip code has a center Longitude / Latitude point (the Midlothian center is -87.72380065918 / 41.625400543213). For your convenience we have also indicated if that zip code in Midlothian observes Daylight Savings time.