Aroostook County on the map of Maine as of 2025. Cities, roads, borders and directions in Aroostook County of Maine.

Aroostook County is the largest by area and northernmost county in Maine. The population of Aroostook County exceeds 67 thousand people. The county, formed back in 1839 from parts of Penobscot County, and Washington County, spans a total area of 6,829 square miles. The county seat of Aroostook County is Houlton. The county is named after a Mikmaq word meaning beautiful river. This map shows the borders of Aroostook 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 Aroostook County.