Boyds, Maryland is an unincorporated community in rural Montgomery County, Maryland, located about 20 miles north of Washington, D.C. Its ZIP Code is 20841.According to the United States 2010 Census, the ZIP Code Tabulation Area for Boyds covers an area of about 26 square miles and has a population of 10,460. Black Hill Regional Park, Little Seneca Lake, and Seneca Creek State Park are located in Boyds.