| Place Name | Allen |
| Place Type | City |
| ZIP Code(s) | 66833 |
| County | Lyon County |
| Area Code(s) | 620 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 242 |
| Population Growth Rate (2010-19) | -9.60% |
| Majority Ethnicity | White 94.48% |
| Metro/Micro Stats Area | Emporia, KS |
| US Congressional District(s) | Kansas 1st |
| State House Districts | 51 |
| State Senate Districts | 17 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 94.48% |
| African American | 0% |
| Hispanic | 1.1% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.42% |