Washington County | |
---|---|
Coordinates: 39°36′N 77°49′W / 39.6°N 77.81°W | |
Country | United States |
State | Maryland |
Founded | September 6, 1776 |
Named for | George Washington |
Seat | Hagerstown |
Largest city | Hagerstown |
Area | |
• Total | 467 sq mi (1,210 km2) |
• Land | 458 sq mi (1,190 km2) |
• Water | 9.6 sq mi (25 km2) 2.0% |
Population (2020) | |
• Total | 154,705 |
• Estimate (2023) | 155,813 |
• Density | 330/sq mi (130/km2) |
Time zone | UTC−5 (Eastern) |
• Summer (DST) | UTC−4 (EDT) |
Congressional district | 6th |
Website | www |
Washington County is a county located in the western part of the U.S. state of Maryland. The population was 154,705 as of the 2020 census, making it the most populous county in the Western Maryland region.[1] Its county seat and largest city is Hagerstown.[2]
Washington County was the first county in the United States to be named for the Revolutionary War general (and later President) George Washington. Washington County is one of three Maryland counties recognized by the Appalachian Regional Commission as being part of Appalachia.[3] The county borders southern Pennsylvania to the north, Northern Virginia to the south, and the Martinsburg Panhandle of West Virginia to the south and west. Washington County is included in the Hagerstown-Martinsburg, MD-WV Metropolitan Statistical Area, which is also included in the Washington-Baltimore-Arlington, DC-MD-VA-WV-PA Combined Statistical Area.