Avenue, MD

ZIP code 20609 encompasses the historic town of Calverton, Maryland. This area is primarily residential with a few commercial establishments scattered throughout. Important landmarks in the area include the Calverton School, a private college-preparatory school, and the Calverton National Cemetery, a final resting place for thousands of veterans and their families. The zip code also covers portions of the Patuxent Research Refuge, a renowned wildlife refuge and research facility.