Below is a list of Altamont IL zip codes. For your research we have also included Altamont Area Code, Time Zone, UTC and the local Effingham County FIPS Code. Each Altamont Illinois zip code has a center Longitude / Latitude point (the Altamont center is -88.747901916504 / 39.059700012207). For your convenience we have also indicated if that zip code in Altamont observes Daylight Savings time.