Zip Code 21230 — Baltimore, MD
21230 is a ZIP Code associated with Baltimore, MD, located within Baltimore. 21230 ranks #19 out of 67 ZIP codes in Baltimore County by population (and #72 out of 477 in MD). The area supports an estimated population of 32,977 residents across Data Pending housing units, with a population density of 2,015.3 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (39.266510, -76.622130)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 21230 |
| Primary City | Baltimore |
| State / Province | MD |
| County | Baltimore |
| Total Population | 32,977 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 2,015.3 people/sq mi |
| Timezone | America/New_York |
How 21230 Compares
| Metric | ZIP 21230 | Baltimore County | MD State Average |
|---|
| Population | 32,977 | 1,414,366 (Total) | 6,205,597 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 2,015.3 /sq mi | -- | -- |
| County Pop Rank | #19 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 →