| City: | Washington, District of Columbia |
| Names to Avoid: | Navy Observatory |
| County: | District Of Columbia County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:07:49 AM |
| Population: | No Population Data |
| Area Codes: | 202 / 771 |
| Classification: | Unique [Company/Government] |
| Coordinates: | 38.9203, -77.0651 |
| Quick Link: |
The U.S. Naval Observatory operates under dedicated ZIP code 20392 on Massachusetts Avenue in Northwest Washington, D.C. Established in 1830, the Observatory is one of the oldest scientific agencies in the United States, responsible for determining precise time, astronomical observations, and producing the Nautical Almanac. The 72-acre campus is also home to Number One Observatory Circle, the official residence of the Vice President of the United States since 1974. This postal designation has been in place for over two decades.
Postal records show 3 ZIP+4 codes routing to the Oceanographer of the Navy and Superintendent of the Naval Observatory on Massachusetts Avenue. Census Business Patterns shows 3 establishments with 27 employees. Census demographic data is not available for this ZIP due to its secure nature. Washington is the valid mailing city for this designation.
| Establishments: | 3 |
| Employment: | 27 |
| Residential: | 0 |
| Business: | 1 |
Buildings registered in the USPS ZIP+4 database with designated codes for direct mail delivery.
ZIP Code 20392 supports both business and residential activity. According to the Business Census (2024), there are 3 business establishments, employing about 9 people with an annual payroll of $744,000. 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: | 3Source: CBP |
| 1st Quarter Payroll: | $181,000Source: CBP |
| Annual Payroll: | $744,000Source: CBP |
| # of Employees: | 9Source: CBP |
ZIP Code 20392 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 20392, 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 20392 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 February 1, 2026.