Below is a list of Latham IL zip codes. For your research we have also included Latham Area Code, Time Zone, UTC and the local Logan County FIPS Code. Each Latham Illinois zip code has a center Longitude / Latitude point (the Latham center is -89.162696838379 / 39.971298217773). For your convenience we have also indicated if that zip code in Latham observes Daylight Savings time.