Below is a list of Stillman Valley IL zip codes. For your research we have also included Stillman Valley Area Code, Time Zone, UTC and the local Ogle County FIPS Code. Each Stillman Valley Illinois zip code has a center Longitude / Latitude point (the Stillman Valley center is -89.179000854492 / 42.10710144043). For your convenience we have also indicated if that zip code in Stillman Valley observes Daylight Savings time.