| Place Name | Allenstown |
| Place Type | Town |
| ZIP Code(s) | 03034 03037 03106 03275 |
| County | Merrimack County |
| Area Code(s) | 603 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 4,704 |
| Majority Ethnicity | White 90.31% |
| Metro/Micro Stats Area | Concord, NH |
| US Congressional District(s) | New Hampshire 2nd |
| State House Districts | Merrimack 22 |
| State Senate Districts | 17 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 90.31% |
| African American | 5.86% |
| Hispanic | 0.24% |
| Asian | 1.85% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.74% |