Mercer County Map
The County of Mercer is located in the State of Illinois. Find directions to Mercer County, browse local businesses, landmarks, get current traffic estimates, road conditions, and more. According to the 2020 US Census the Mercer County population is estimated at 15,225 people. The Mercer County time zone is Central Daylight Time which is 6 hours behind Coordinated Universal Time (UTC).
Nearby counties include Henderson County, Henry County, Knox County, Rock Island County, Warren County, Des Moines County, Louisa County.
Top cities include Aledo, Viola, New Windsor, Matherville, New Boston