Gaithersburg is a city located in Montgomery County, Maryland, United States. It is a vibrant and diverse community with a rich history and a variety of amenities. Gaithersburg is approximately 20 miles northwest of Washington, D.C. It is part of the Washington metropolitan area. Gaithersburg had a population of 69,657 in 2020.
Seneca Creek State Park is a public recreation area encompassing more than 6300 acres along 14 miles of Seneca Creek in its run to the Potomac River in Montgomery County, Maryland.