Schuylkill County is a county in the Commonwealth of Pennsylvania. As of the 2010 census, the population was 148,289. The county seat is Pottsville. The county was created on March 1, 1811, from parts of Berks, Northampton, and Northumberland counties and named for the Schuylkill River. Schuylkill County comprises the Pottsville, PA Micropolitan Statistical Area. It is located in the heart of the anthracite Coal Region of Eastern Pennsylvania.