| Place Name | Allen |
| Place Type | Census Designated Place |
| ZIP Code(s) | 21822 |
| County | Wicomico County |
| Area Code(s) | 410,443,667 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 168 |
| Population Growth Rate (2010-19) | -5.24% |
| Majority Ethnicity | White 100% |
| Metro/Micro Stats Area | Salisbury, MD-DE |
| US Congressional District(s) | Maryland 1st |
| House of Delegates Districts | 37B |
| State Senate Districts | 37 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 100% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |