Riva is a census-designated place (CDP) in Anne Arundel County, Maryland, United States. The population was 4,076 at the 2010 census. The area is scenic, especially where the two-lane Riva Road crosses the South River on a bridge. The area is growing with large new homes as the suburbs of Annapolis grow outward. Riva is bordered by Annapolis to the north, Edgewater to the east, and Davidsonville to the west.
Aisquith Farm E Archeological Site was listed on the National Register of Historic Places in 1991.
Riva is located at 38°57′7″N 76°34′56″W (38.952079, −76.582135).
According to the United States Census Bureau, the CDP has a total area of 2.9 square miles (7.5 km2), of which 2.5 square miles (6.4 km2) is land and 0.46 square miles (1.2 km2), or 15.37%, is water.
As of the census of 2000, there were 3,966 people, 1,423 households, and 1,169 families residing in the CDP. The population density was 1,589.0 people per square mile (612.5/km2). There were 1,453 housing units at an average density of 582.2/sq mi (224.4/km2). The racial makeup of the CDP was 94.23% White, 3.43% African American, 1.21% Asian, 0.15% from other races, and 0.98% from two or more races. Hispanic or Latino of any race were 2.12% of the population.
There were 1,423 households, out of which 37.6% had children under the age of 18 living with them, 72.1% were married couples living together, 6.3% had a female householder with no husband present, and 17.8% were non-families.