| City: | Washington, District of Columbia |
| Names to Avoid: | Defense Intelligence |
| County: | District Of Columbia County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:07:18 AM |
| Population: | No Population Data |
| Area Codes: | 202 / 771 |
| Classification: | Unique [Company/Government] |
| Coordinates: | 38.8480, -77.0121 |
| Quick Link: |
The Defense Intelligence Agency operates under dedicated ZIP code 20340 at Joint Base Anacostia-Bolling in Washington, D.C. Founded in 1961, the DIA is the primary military intelligence agency of the U.S. Department of Defense, providing intelligence assessments to combat commanders and defense policymakers. The DIA Headquarters opened in 1984 and houses approximately 30% of the agency's workforce. This postal designation has been in place for over two decades.
Postal records show 3 ZIP+4 codes routing to the Defense Intelligence Agency on MacDill Boulevard in Southwest Washington. The 0.1-square-mile boundary encompasses DIA headquarters facilities. Census Business Patterns data shows 19 establishments with 618 employees within this ZIP. Census demographic data is not available, consistent with the classified nature of this intelligence facility. Washington is the valid mailing city for this designation.
| Establishments: | 19 |
| Employment: | 618 |
| Residential: | 0 |
| Business: | 1 |
Buildings registered in the USPS ZIP+4 database with designated codes for direct mail delivery.
ZIP Code 20340 supports both business and residential activity. According to the Business Census (2024), there are 17 business establishments, employing about 573 people with an annual payroll of $49,918,000. USPS data shows 0 residential mailboxes and 1 business mailboxes, reflecting local delivery coverage.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 1Source: USPS |
| Total Delivery Receptacles: | 1Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 17Source: CBP |
| 1st Quarter Payroll: | $12,080,000Source: CBP |
| Annual Payroll: | $49,918,000Source: CBP |
| # of Employees: | 573Source: CBP |
ZIP Code 20340 is located in District Of Columbia County, District of Columbia, within the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area (CBSA 47900) and District of Columbia's 98th Congressional District. This Metro area has a population of 6,263,796 people, about 0.00% of whom live in ZIP Code 20340, and is subdivided into the Washington, DC-MD division. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Washington-Arlington-Alexandria, DC-VA-MD-WVSource: Census |
| CBSA Number: | 47900Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | Washington, DC-MD (CBSA Div 47764)Source: Census |
| CBSA Population: | 6,263,796Source: Census |
| MSA: | Washington-Baltimore, DC-MD-VA-WV CMSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 98Source: USPS |
| Congressional Land Area: | 61.40 sq miSource: Census |
| PMSA: | Washington, DC-MD-VA-WV PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 1150000Source: Census |
| Place Name: | Washington city; District of ColumbiaSource: Census |
We could not locate which school district 20340 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on January 1, 2026.