Frederick County, Maryland Frederick County, Maryland Frederick County is located in the northern part of the U.S. state of Maryland. As of the 2010 U.S. Census, the population was 240,336. The county seat is Frederick. Frederick County is included in the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area. Like other outlying sections of the Washington metropolitan area, Frederick County has experienced a rapid population increase in recent years. It borders the southern border of Pennsylvania and the northeastern border of Virginia. The county is home to Catoctin Mountain Park (encompassing the presidential retreat Camp David) and to the U.S. Army's Fort Detrick. It has also
Arts and culture of Maryland of two venues: the "Mansion" and the "Music Center." English is the most widely spoken language; however, Spanish is spoken in small regions within the Washington, DC - Baltimore corridor. 87.4% of the population speaks only English at home, while 4.7% speak Spanish. The remaining 7.9% are composed of 15 other reported languages, with French being the most common and Arabic being the least common. Southern Maryland, the Eastern Shore and Western Maryland have Southern accents and are influenced by southern culture. There are several music festivals in Maryland. A jazz festival is held in Silver Spring on the second