At 0.49 square miles (1.27 km2), Petersburg is ranked as the smallest city by total area in the state of Michigan. Although, the city of Clarkston has a larger total area (when water is included) but a smaller land area at only 0.44 square miles (1.14 km2), which ranks Petersburg as the second-smallest city in land area.
Zip Codes in Petersburg, MI that we also serve: 49270