Facts about Frederick County, MD
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.
Geography
According to the U.S. Census Bureau, the county has a total area of 667 square miles (1,730 km²), of which 660 square miles (1,700 km²) is land and 7.2 square miles (19 km²) (1.1%) is water. It is the largest county in Maryland in terms of land area.
Cities
Serving Frederick County, MD

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