| City: | Mount Vernon, Virginia |
| County: | Fairfax County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:32:27 AM |
| Population: | No Population Data |
| Area Codes: | 571 / 703 |
| Classification: | PO Box |
| Coordinates: | 38.7078, -77.0865 |
| Quick Link: |
Residents and businesses using 22121 boxes receive their mail at the post office location, while street addresses in the surrounding area fall under ZIP 22309. The single street served by this ZIP's carrier routes is Mount Vernon Memorial Highway itself, reflecting the narrow geographic focus of this specialized postal facility. Despite the PO Box designation, the area isn't isolated. It's part of the greater Alexandria metro area, positioned along the Potomac River southeast of Washington, DC.
The single street name reflects this ZIP's identity as a postal facility serving George Washington's Mount Vernon estate and the memorial parkway leading to it. The highway designation indicates this is a corridor rather than a residential neighborhood.
ZIP Code 22121 supports both business and residential activity. According to the Business Census (2024), there are 6 business establishments, employing about 660 people with an annual payroll of $25,648,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 192Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 6Source: CBP |
| 1st Quarter Payroll: | $5,457,000Source: CBP |
| Annual Payroll: | $25,648,000Source: CBP |
| # of Employees: | 660Source: CBP |
ZIP Code 22121 is located in Fairfax County, Virginia, within the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area (CBSA 47900) and Virginia's 8th Congressional District. This Metro area has a population of 6,263,796 people, about 0.00% of whom live in ZIP Code 22121, and is subdivided into the Arlington-Alexandria-Reston, VA-WV 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: | Arlington-Alexandria-Reston, VA-WV (CBSA Div 11694)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: | 08Source: USPS |
| Congressional Land Area: | 149.24 sq miSource: Census |
| PMSA: | Washington, DC-MD-VA-WV PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 5154144Source: Census |
| Place Name: | Mount Vernon CDP; VirginiaSource: Census |
We could not locate which school district 22121 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.