20816

20816 is a United States ZIP code used by the United States Postal Service to designate a specific geographic delivery area in Maryland. ZIP codes are part of a nationwide system introduced by the USPS in 1963 to improve mail sorting and delivery, and 20816 has been used to route mail to its region since that time. Boundaries of ZIP code areas are defined and occasionally adjusted by the Postal Service to reflect changes in population, development, and mail routing needs.

The 20816 area is part of the broader Washington, D.C. metropolitan region. It is typically associated with residential neighborhoods and local commercial services that support the surrounding community. Like other ZIP codes, 20816 also appears in demographic, planning, and emergency-response data used by government agencies, researchers, and businesses.

In practical terms, 20816 appears on addresses, shipping records, billing, and geographic information systems to identify a specific location within Maryland. As with all ZIP codes in the United States, its primary purpose is efficient mail delivery, with secondary uses in analysis and regional organization.

See also:

- List of ZIP codes in Maryland

- Maryland ZIP codes

- Washington metropolitan area