Frederick County Profile Frederick County is Maryland's largest county in size - 663 square miles. It is home to the 5,700 acre Catoctin National Park, site of the Camp David Presidential Retreat. Frederick County is also Maryland's largest dairy producer, providing one-third of the state's production.
Manufacturing accounts for ten percent of total employment.
The county's largest employers include the National Cancer Institute at Fort Detrick, State Farm Insurance, Frederick Memorial Hospital and Eastalco Aluminum. Frederick County's appeal as a residential community is enhanced by the area's natural beauty, its historic and cultural offerings and its impressive array of retail and social establishments. The county has an abundance of first rate restaurants, four golf courses, swimming, boating and fishing areas. It is also home to the Baltimore Orioles farm team, the Frederick Keys.