Baltimore, MD

ZIP code 21278 is designated for the National Security Agency (NSA) located in Fort Meade, Maryland. This area is home to various important landmarks, including the NSA headquarters, the Defense Information Systems Agency (DISA), the United States Cyber Command (USCYBERCOM), and the Defense Courier Service (DCS). The presence of these government agencies contributes to the area's significance in terms of national security and intelligence operations.