| Zip Code : | 21810 |
| City : | Allen |
| County : | Wicomico County |
| State : | Maryland (MD) |
| Land Area : | 9.65 sq mi |
| Water Area : | 0.11 sq mi |
| Latitude : | 38.3007466 |
| Longitude : | -75.7119932 |
| Population (2010): | 487 |
| Population Estimate (2012) : | 439 |
| Population Density : | 50.45/sq mi |
| Housing Units (2012) : | 221 |
| Median Household Income (2012) : | $95,625 (Maryland : $72,999, USA : $53,046) |
| Median Family Income (2012) : | $97,266 (Maryland : $88,092, USA : $64,585) |
| Median House Price (2012) : | $260,800 (Maryland : $304,900, USA : $181,400) |