Mercer County Map
The County of Mercer is located in the State of New Jersey. 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 367,239 people. The Mercer County time zone is Eastern Daylight Time which is 5 hours behind Coordinated Universal Time (UTC).
Nearby counties include Burlington County, Hunterdon County, Middlesex County, Monmouth County, Somerset County, Bucks County.
Top cities include Trenton, Ewing Township, Princeton, East Windsor Township, West Windsor Township