Below is a list of Alden IL zip codes. For your research we have also included Alden Area Code, Time Zone, UTC and the local Mchenry County FIPS Code. Each Alden Illinois zip code has a center Longitude / Latitude point (the Alden center is -88.530097961426 / 42.454601287842). For your convenience we have also indicated if that zip code in Alden observes Daylight Savings time.