Zip Code 21631 — East New Market, MD
21631 is a ZIP Code associated with East New Market, MD, located within Dorchester. 21631 ranks #3 out of 16 ZIP codes in Dorchester County by population (and #297 out of 477 in MD). The area supports an estimated population of 2,429 residents across Data Pending housing units, with a population density of 38.8 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (38.587840, -75.945980)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 21631 |
| Primary City | East New Market |
| State / Province | MD |
| County | Dorchester |
| Total Population | 2,429 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 38.8 people/sq mi |
| Timezone | America/New_York |
How 21631 Compares
| Metric | ZIP 21631 | Dorchester County | MD State Average |
|---|
| Population | 2,429 | 31,256 (Total) | 6,205,597 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 38.8 /sq mi | -- | -- |
| County Pop Rank | #3 of 16 | -- | -- |
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 →