Petersburg is located at 37°12′46″N 77°24′1″W / 37.21278°N 77.40028°W / 37.21278; -77.40028 (37.21295, -77.400417).
According to the United States Census Bureau, the city has a total area of 23.2 square miles (60.1 km2), of which 22.9 square miles (59.3 km2) of land and 0.2 square miles (0.5 km2) (1.1%) is water.
Petersburg is located on the Appomattox River at the fall line, which marks the area where the Piedmont region (continental bedrock) and the Atlantic coastal plain (unconsolidated sediments) meet. The fall line is typically prominent where a river crosses its rocky boundary, as the...
Source: Wikipedia (as of 04/11/2019). Read more from Wikipedia