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APG Tenants

Aberdeen Proving Ground is home to 66 Tenants and a host of satellite activities.

Among the major tenants are the U.S. Research, Development and Engineering Command (RDECOM), U.S. Army Ordnance Center and Schools, U.S. Army Developmental Test Command, U.S. Army Aberdeen Test Center, U.S. Army Center for Health Promotion and Preventive Medicine, Northeast Region Civilian Personnel Operations Center, U.S. Army Medical Research Institute of Chemical Defense, U.S. Army Chemical Materials Agency, Edgewood Chemical Biological Center, 20th Support Command (CBRNE) and major elements of the Army Research Laboratory.

A complete list of tenants is available by clicking here.Leaving Site

Fast Facts
  • Established on October 20, 1917, six months after the US entered WWI, Aberdeen Proving Ground is the Army's oldest active proving ground.
  • The post officially opened on December 14, 1917. The first gun was fired on January 2, 1918.
  • APG occupies 72,229 acres in Harford County, MD.
  • The installation features two principal areas separated by the Bush River: the northern Aberdeen Area and the southern sector, formerly Edgewood Arsenal and today known as the Edgewood Area.
  • The Edgewood Arsenal was established in November, 1917 as a chemical weapons research, development and testing facility.
  • APG property not attached to the main installation includes the Churchville Test Site in Harford County and Carroll Island and Graces Quarters in Baltimore County.
  • More than 7,500 civilians work at Aberdeen Proving Ground, and more than 5,000 military personnel are assigned there. In addition, there are nearly 3,000 contractors and private business employees working on the proving ground.
  • There are 2,148 military family members living on the post and another 155 off post. The post supports more than 16,000 military retirees and retiree family members.
  • APG provides employment for approximately 4.5 percent of Harford County's 118,525 person civilian labor force, making it the largest single employer in the County.
  • During FY 2003, APG's total economic impact on Harford County (payroll and contracts) was $612.1 million.
Military Truck Testing
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