Edgewood is an unincorporated community and census-designated place (CDP) in Harford County, Maryland, United States. The population was 25,562 at the 2010 census, up from 23,378 in 2000.
Edgewood is located in southwestern Harford County. It is bordered to the west by Baltimore County, Joppatowne, to the north by Bel Air South, to the east by the Bush River, an arm of Chesapeake Bay, to the south by the Edgewood Arsenal portion of Aberdeen Proving Ground, and to the southwest by the tidal Gunpowder River, another arm of the Chesapeake.
Interstate 95 forms the northern border of the Edgewood CDP and provides access from Exit 74 (Maryland Route 152) and Exit 77 (Maryland Route 24). I-95 leads southwest 25 miles (40 km) to Baltimore and northeast 50 miles (80 km) to Wilmington, Delaware. U.S. Route 40 (Pulaski Highway) runs through the northern part of Edgewood, parallel to I-95. US 40 leads southwest 9 miles (14 km) to White Marsh and the same distance northeast to Aberdeen. Maryland Route 24 begins at an entrance to Aberdeen Proving Ground in the southern part of the CDP and leads 10 miles (16 km) north to Bel Air, the Harford County seat.
According to the United States Census Bureau, the Edgewood CDP has a total area of 17.9 square miles (46.4 km2), of which 17.8 square miles (46.1 km2) are land and 0.2 square miles (0.4 km2), or 0.77%, are water.
As of the census of 2000, there were 23,378 people, 8,299 households, and 6,224 families living in the CDP. The population density was 1,303.9 people per square mile (503.4/km2).