Pottsville is a city located in Schuylkill County, Pennsylvania. Pottsville has a 2026 population of 13,404. It is also the county seat of Schuylkill County. Pottsville is currently growing at a rate of 0.22% annually and its population has increased by 0.46% since the most recent census, which recorded a population of 13,342 in 2020.