| Place Name | Lancaster |
| Place Type | Census Designated Place |
| ZIP Code(s) | 03584 |
| County | Coos County |
| Area Code(s) | 603 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 1,575 |
| Population Growth Rate (2010-19) | 12.52% |
| Majority Ethnicity | White 99.75% |
| Metro/Micro Stats Area | Berlin, NH |
| US Congressional District(s) | New Hampshire 2nd |
| State House Districts | Coos 4 |
| State Senate Districts | 1 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 99.75% |
| African American | 0.1% |
| Hispanic | 0% |
| Asian | 0.05% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.1% |