Zip Code 20774 — Upper Marlboro, MD
20774 is a ZIP Code associated with Upper Marlboro, MD, located within Prince George's. The postal region supports an estimated population of 51,816 residents across Data Pending housing units, with a population density of 573.6 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (38.875890, -76.769250)
| Data Metric | Local Statistic |
| Postal / Zip Code | 20774 |
| Primary City | Upper Marlboro |
| State / Province | MD |
| County | Prince George's |
| Total Population | 51,816 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 573.6 people/sq mi |
| Timezone | America/New_York |
How 20774 Compares
| Metric | ZIP 20774 | Prince George's County | MD State Average |
| Population | 51,816 | 951,497 | 6,205,597 |
| Median Income | Data Pending | N/A | N/A |
| Population Density | 573.6 /sq mi | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →