Martinsburg Map
Martinsburg is a city in Audrain County, Missouri, United States. The population was 326 at the 2000 census, at which time it was a town.
Martinsburg is located at 39°6?4?N 91°38?50?W / 39.10111°N 91.64722°W / 39.10111; -91.64722 (39.101182, -91.647355).
According to the United States Census Bureau, the town has a total area of 0.3 square miles (0.7 km²), all of it land.
Nearby cities include Montgomery City, Farber, Mexico, Middletown, Auxvasse.