Adelphi is an unincorporated area and census-designated place in Prince George's County, Maryland, United States. Per the 2020 Census, the population was 16,823. Adelphi includes the following subdivi
The Adelphi Mill in July 2007
The Chillum-Adelphi Volunteer Fire Department on Riggs Road
The Wilson H. Elkins Building, headquarters of the University System of Maryland in College Park, Maryland
The U.S. Army Combat Capabilities Development Command Army Research Laboratory is the sole fundamental research laboratory of the United States Army. DEVCOM ARL is a component unit of the U.S. Army Co
Adelphi, Maryland
…Diamond Laboratories was established on 137 acres (0.55 km2) in the northern part of Adelphi. That facility continues as the Adelphi Laboratory Center, Army Research Laboratory (ARL), the U.S. Army's corporate research laboratory. Other adjacent federal facilities include the National Archives at College Park and headquarters…
Aerial view of DEVCOM ARL headquarters.
DEVCOM ARL's Rodman Materials Research Laboratory at Aberdeen Proving Ground, Maryland, was named in honor of the commander of Watertown Arsenal, Major Thomas J. Rodman.