| City: | Upper Marlboro, Maryland |
| City Alias: | Uppr Marlboro |
| County: | Prince Georges County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 9:56:38 PM |
| Population: | No Population Data |
| Area Codes: | 227 / 240 / 301 |
| Classification: | PO Box |
| Coordinates: | 38.8159, -76.7498 |
| Quick Link: |
ZIP code 20773 serves the historic town of Upper Marlboro, the county seat of Prince Georges County, Maryland. This isn't a standalone geographic area. It's a point location within ZIP code 20772, providing PO Box service at the Upper Marlboro post office.
The post office maintains 380 PO Boxes and serves 275 business delivery points. All street addresses in this ZIP use Elm Street with unit designators, indicating this is a concentrated facility rather than a spread-out residential zone. Street delivery exists but runs through a single city carrier route.
Upper Marlboro sits in the Washington, DC metropolitan area, surrounded by suburban communities like Marlton, Rosaryville, and Kettering. Residents and businesses here use 20773 for PO Box mail while physical locations receive carrier delivery through the neighboring 20772 ZIP code. The USPS also accepts "Uppr Marlboro" as a valid mailing name for this ZIP.
All street records are on Elm Street with unit designators, indicating a concentrated mail delivery point.
ZIP Code 20773 supports both business and residential activity. According to the Business Census (2024), there are 8 business establishments, employing about 35 people with an annual payroll of $1,106,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 9,149Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 8Source: CBP |
| 1st Quarter Payroll: | $305,000Source: CBP |
| Annual Payroll: | $1,106,000Source: CBP |
| # of Employees: | 35Source: CBP |
ZIP Code 20773 is located in Prince Georges County, Maryland, within the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area (CBSA 47900) and Maryland's 5th Congressional District. This Metro area has a population of 5,582,170 people, about 0.00% of whom live in ZIP Code 20773, 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: | 5,582,170Source: Census |
| MSA: | Washington-Baltimore, DC-MD-VA-WV CMSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 05Source: USPS |
| Congressional Land Area: | 1481.24 sq miSource: Census |
| PMSA: | Washington, DC-MD-VA-WV PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 2479875Source: Census |
| Place Name: | Upper Marlboro town; MarylandSource: Census |
We could not locate which school district 20773 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.