Middleburg, Pennsylvania
Middleburg is a borough in Snyder County, located in Central Pennsylvania's Susquehanna River Valley. The population was 1,309 at the 2010 census. It is the county seat of Snyder County. Middleburg is part of the Selinsgrove, PA Micropolitan Statistical Area, and is also part of the larger Bloomsburg-Berwick-Sunbury, PA Combined Statistical Area.