Sumner County on the map of Tennessee 2024. Cities, roads, borders and directions in Sumner County of Tennessee.

Sumner County is situated on the northern border of Tennessee. This glorious county is named after Jethro Sumner (1733-1785), an American colonist who defended North Carolina against the British in 1780. The total area of Sumner County is about 529 square miles. This county, created in 1786, is populated today by at least 201 thousand residents. Gallatin is the county seat of Sumner County. This map shows the borders of Sumner 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 Sumner County.