Mercer County on the map of New Jersey 2024. Cities, roads, borders and directions in Mercer County of New Jersey.

Mercer County is an inland county situated in central New Jersey. This glorious county was set up in 1838. The county seat of Mercer County is Trenton, and the largest settlement is Hamilton Township. The population of Mercer County is about 386 thousand inhabitants. The overall area of the county is 226 square miles. This map shows the borders of Mercer County as well as neighboring counties, including major highways and natural objecsts as of 2024. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of Mercer County.