Some of the cities, towns, and places in Washington County are Adamant, Barre, Barre (Town), Berlin, Cabot, Calais, Duxbury, East Barre, East Calais, East Montpelier, East Montpelier Center, East Roxbury, Fayston, Graniteville, Irasville, Marshfield, Middlesex, Montpelier, Moretown, North Montpelier, Northfield, Plainfield, Putnamville, Riverton, Roxbury, South Barre, South Northfield, South Woodbury, Waitsfield, Warren, Waterbury, Waterbury Center, Websterville, Woodbury, Worcester
Washington County is a county located in the U.S. state of Vermont. Named after George Washington, its county seat is the city of Montpelier (the least populous state capital in the United States) and the most populous municipality is the city of Barre. As of the 2020 census, the population was 59,807, making it the third-most populous county in Vermont, but the third-least populous capital county in the United States after Hughes County, South Dakota and Franklin County, Kentucky.
Washington County comprises the Barre, Vermont micropolitan statistical area.
In 2010, the center of population of Vermont was located in Washington County, in the town of Warren.