Decatur County is located in the eastern region of Indiana. This glorious county is named after Commodore Stephen Decatur, hero of the War of 1812. The county seat of Decatur County is Greensburg. The county's area is about 373 square miles. Founded on Dec 12, 1821, today Decatur County is home to 26 thousand residents. This map shows the borders of Decatur 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 Decatur County.
The borders of Decatur County over the map of Indiana
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