Washington County is a county located in the U.S. state of Maryland. The population was 154,705 as of the 2020 census. Its county seat and largest city is Hagerstown. The county is part of the Western
Burnside's Bridge in Washington County, site of heavy combat during the Battle of Antietam
View south along I-81 from I-70 in Washington County
Frederick County is 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.
Downtown Frederick with the Blue Ridge Mountains in the distance in June 2014