Montgomery County is the most populous county in the U.S. state of Maryland. As of the 2020 census, the county's population was 1,062,061, increasing by 9.3% from 2010. The county seat is Rockville and Germantown is the most populous place in the... Wikipedia
Cities: Rockville, Silver Spring, Gaithersburg, and more
Population: 1.053 million (2022)
Area codes: 301; 240
Congressional districts: 4th, 6th, 8th
Largest community: Germantown
Named for: Richard Montgomery
Seat: Rockville