Sullivan County is found in the northeastern corner of Tennessee. This nice county is named after Governor of New Hampshire John Sullivan (1740-1795). The overall population of Sullivan County reaches 159 thousand people. The county, formed in 1779, covers an area of 413 square miles. The county seat of Sullivan County is Blountville. This map shows the borders of Sullivan County as well as neighboring counties, including major highways and natural objecsts as of 2025. 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 Sullivan County.
The borders of Sullivan County over the map of Tennessee
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