Zip Code 21128 — Perry Hall, MD
21128 is a ZIP Code associated with Perry Hall, MD, located within Baltimore. 21128 ranks #35 out of 67 ZIP codes in Baltimore County by population (and #149 out of 477 in MD). The area supports an estimated population of 15,501 residents across Data Pending housing units, with a population density of 879.3 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (39.405260, -76.446280)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 21128 |
| Primary City | Perry Hall |
| State / Province | MD |
| County | Baltimore |
| Total Population | 15,501 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 879.3 people/sq mi |
| Timezone | America/New_York |
How 21128 Compares
| Metric | ZIP 21128 | Baltimore County | MD State Average |
|---|
| Population | 15,501 | 1,414,366 (Total) | 6,205,597 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 879.3 /sq mi | -- | -- |
| County Pop Rank | #35 of 67 | -- | -- |
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 →