Accokeek, "at the edge of the hill" in Algonquin, is a census-designated place (CDP) located in Prince George's County, Maryland, United States. The CDP is located on the Potomac River, borders Charles County and is approximately 17 miles from Washington. It is a part of the Washington metropolitan area. The population of the CDP, as of the 2020 United States Census was 13,927.

Prince George's County is located in the U.S. state of Maryland bordering the eastern portion of Washington, D.C. As of the 2020 U.S. census, the population was 967,201, making it the second-most populous county in Maryland, behind neighboring Montgomery County. The 2020 census counted an increase of nearly 104,000 in the previous ten years. Its county seat is Upper Marlboro. It is the largest and the second most affluent African American-majority county in the United States, with five of its communities identified in a 2015 top ten list.