Frederick County Maryland Map

Frederick County is a county located in Maryland, United States. As of the 2020 U.S. census, the population was 271,717. The county seat is Frederick. The county is part of the Capital region of the state.
  • Country: United States
  • State: Maryland
  • Founded: June 10, 1748
  • County seat: Frederick
  • ZIP Codes: 21701, 21702, 21703, 21704, 21705, 21709
  • Area codes: 301, 240
  • Congressional districts: 6th
Data from: en.wikipedia.org