Calvert County:
While Calvert County is the smallest county in Southern Maryland, it is one of the fastest growing counties in the State. Located just 46 miles from Washington, it still retains its rural character and agrarian roots, while offering good schools, a clean environment and good quality of life. Calvert is a peninsula, with the Chesapeake Bay on the east and the Patuxent River on the west. 
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Charles County:
Take time to smell the roses in Charles County where residents have easy access to all parts of Washington, D.C. as well as commercial and residential growth, comfortable suburban living, and an abundance of nature trails, more than 50 museums, arts and culture opportunities, parks, spectator sports, and golf courses. Charles County is a great place to raise your family. The public schools offer a good student-teacher ratio and public education is a top priority. Charles County spends approximately $7,000 per student.
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St. Mary's County:
St. Mary's County was the first county established in Maryland, in 1637. Today, St. Mary's County is home to the Patuxent River Naval Air Station, including the Naval Air Systems Command Headquarters (NAVAIR), Naval Air Warfare Center-Aircraft Division (NAWCAD), and many others known as leaders in aviation and advanced technology.
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Map - Driving

  
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