Below is a list of Kirkland IL zip codes. For your research we have also included Kirkland Area Code, Time Zone, UTC and the local Dekalb County FIPS Code. Each Kirkland Illinois zip code has a center Longitude / Latitude point (the Kirkland center is -88.857498168945 / 42.08869934082). For your convenience we have also indicated if that zip code in Kirkland observes Daylight Savings time.