Waldorf, MD

ZIP code 20604 is located in Calvert County, Maryland. This area is home to the highly esteemed Patuxent River Naval Air Station, a major landmark in the region that serves as the center for United States naval aviation research, testing, and development. Additionally, residents of this ZIP code can enjoy easy access to attractions such as Lake Independence and the Calvert Cliffs State Park, offering beautiful natural landscapes and outdoor recreational opportunities.