| City: | Washington, District of Columbia |
| Names to Avoid: | Dept Transportation |
| County: | District Of Columbia County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:12:21 AM |
| Population: | 15 [See All] |
| Area Codes: | 202 / 771 |
| Classification: | Unique [Company/Government] |
| Coordinates: | 38.8951, -77.0369 |
| Land Area: | 0.01 sq mi |
| Quick Link: |
The Federal Aviation Administration headquarters at 800 Independence Avenue SW operates under dedicated ZIP code 20591 in Washington's Southwest Employment Area. An operating administration within the U.S. Department of Transportation, the FAA regulates civil aviation, oversees the nation's air traffic control system, certifies aircraft and pilots, and develops air safety standards. Postal records confirm the Federal Aviation Administration as a delivery point on Independence Avenue. This postal designation has served FAA headquarters for over two decades.
The 2020 Census counted 15 residents within this ZIP, with a median age of 41.5 years, likely reflecting a small residential enclave adjacent to federal offices. Census employment data shows 134 workers at 10 establishments, representing a fraction of the FAA's total workforce of approximately 45,000 employees nationwide. Washington is the valid mailing city for this designation.
| Population: | 15 |
| Median Age: | 41.5 |
| Housing Units: | 1 |
| Establishments: | 10 |
| Employment: | 134 |
| Residential: | 0 |
| Business: | 1 |
Buildings registered in the USPS ZIP+4 database with designated codes for direct mail delivery.
ZIP Code 20591 has 15 residents and 1 households (average 15.00 persons per household). The median age is 41.5 years, significantly older than the state (33.9) and slightly older than the nation (38.8). The gender split is 53.3% male and 46.7% female, which is higher than the state male share (46.8%), making this a male-majority area. Largest groups are Hispanic or Latino (26.7%) and White (13.3%, much lower than the state average of 39.6% and well below the national average of 61.6%); Hispanic or Latino residents make up 26.7%, which is much higher than the state average (11.3%).
Explore More: Population Over Time By Age & Gender By Race By Gender Nativity & Citizenship
| 2020 Population: | 15Source: Census DHC |
| 2024 ACS Population Estimate: | 0Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 1,500.0 people per sq mile |
| Average Income: | $0Source: Census ACS |
| Households: | 1Source: Census DHC |
| Average House Value: | $0Source: Census ACS |
| Persons Per Household: | 15.00Source: Census DHC |
| Average Family Size: | 0.00Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Decennial Census | 0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 15 | -- | -- | -- |
Median Age: 41.5
Male Median Age: 40.5
Female Median Age: 41.5
| Group | < 5 | 5-9 | 10-14 | 15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | 50-54 | 55-59 | 60-64 | 65-69 | 70-74 | 75-79 | 80-84 | 85+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 1 | 0 | 0 | 0 | 2 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 |
| Female | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 1 | 0 | 0 |
| Total | 2 | 0 | 1 | 0 | 2 | 0 | 0 | 2 | 2 | 1 | 0 | 0 | 0 | 2 | 1 | 1 | 0 | 1 |
| White: | 2 | 16.67% |
| Black: | 2 | 16.67% |
| Hispanic:* | 4 | 33.33% |
| Asian: | 2 | 16.67% |
| American Indian: | 0 | 0% |
| Hawaiian: | 0 | 0% |
| Other: | 2 | 16.67% |
| Total: | 12 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 8 | 53.33% | 40.5 years |
| Females: | 7 | 46.67% | 41.5 years |
| Total: | 15 | 100% | 41.5 years |
| Native, born in the United States: | 0 | 0% |
| Native, born in PR, Island Areas, or abroad: | 0 | 0% |
| Foreign born, naturalized U.S. citizen: | 0 | 0% |
| Foreign born, not a U.S. citizen: | 0 | 0% |
| Total Population: | 0 | 100% |
| Total Native Population: | 0 | 0% |
| Total Foreign-born Population: | 0 | 0% |
ZIP Code 20591 supports both business and residential activity. According to the Business Census (2024), there are 10 business establishments, employing about 105 people with an annual payroll of $8,847,000. 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: | 10Source: CBP |
| 1st Quarter Payroll: | $2,247,000Source: CBP |
| Annual Payroll: | $8,847,000Source: CBP |
| # of Employees: | 105Source: CBP |
ZIP Code 20591 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 20591, and is subdivided into the Washington, DC-MD division. It covers 0.01 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: | 0.01 sq miSource: 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 20591 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.