Silver Spring is an unincorporated community and census-designated place located inside the Capital Beltway in Montgomery County, Maryland, United States. It had a population of 76,716 according to 2013 estimates by the United States Census Bureau, making it the fourth most populous place in Maryland, after Baltimore, Columbia, and Germantown. Silver Spring consists of the following neighborhoods: Downtown Silver Spring, East Silver Spring, Woodside, Woodside Park, North Hills Sligo Park, Long Branch, Montgomery Knolls, Franklin Knolls, Indian Spring Terrace, Indian Spring Village, Clifton Park Village, New Hampshire Estates, and Oakview.The urbanized, oldest, and southernmost part of Silver Spring is a major business hub that lies at the north apex of Washington, D.C. As of 2004, the Central Business District held 7,254,729 square feet of office space, 5216 dwelling units and 17.6 acres of parkland.