| Place Name | Plymouth |
| Place Type | Census Designated Place |
| ZIP Code(s) | 03264 |
| County | Grafton County |
| Area Code(s) | 603 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 3,919 |
| Population Growth Rate (2010-19) | 6.15% |
| Majority Ethnicity | White 88.69% |
| Metro/Micro Stats Area | Lebanon, NH-VT |
| US Congressional District(s) | New Hampshire 2nd |
| State House Districts | Grafton 8 |
| State Senate Districts | 2 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 88.69% |
| African American | 4.59% |
| Hispanic | 0% |
| Asian | 4.03% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 2.68% |