Edgewood, MD

ZIP code 21040 is located in Edgewood, Maryland. This area is home to the Aberdeen Proving Ground, a major U.S. Army facility that focuses on testing and research. Additionally, the ZIP code includes the Edgewood Area of the Aberdeen Proving Ground, which houses various military installations and laboratories. With a mix of residential areas and military facilities, ZIP code 21040 offers a unique blend of community and government operations.