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

Mercer County is situated on the northern border of Missouri. This particular county is named after John F. Mercer (1759–1821), an American lawyer, planter, and Governor of Maryland. The total area of Mercer County is about 454 square miles. This county, set up in 1845, is populated today by at least 3 thousand residents. Princeton is the county seat of Mercer County. 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.