Montgomery County, Pennsylvania

county in Pennsylvania, United States

Montgomery County is the third-most populous county in the U.S. state of Pennsylvania. As of 2020, the population of the county was 856,553.[1] Montgomery County is located adjacent to and northwest of Philadelphia. The county seat is Norristown.[2]


  1. "QuickFacts: Montgomery County, Pennsylvania". United States Census Bureau. Retrieved August 18, 2023.
  2. "Find a County". National Association of Counties. Archived from the original on 2011-05-31. Retrieved 2011-06-07.