|Elevation||810 ft (250 m)|
|Time zone||UTC-6 (Central (CST))|
|• Summer (DST)||UTC-5 (CDT)|
|Area code(s)||847 & 224|
|GNIS feature ID||409027|
Gilmer is an unincorporated community in Lake County, Illinois, United States. Gilmer is located along Gilmer Road and the Canadian National Railway north of Hawthorn Woods.