| Place Name | New Plymouth |
| Place Type | City |
| ZIP Code(s) | 83655 |
| County | Payette County |
| Area Code(s) | 208 |
| Timezone | Mountain Daylight Time (MDT) |
| Population (2022) | 1,674 |
| Population Growth Rate (2010-19) | -2.86% |
| Majority Ethnicity | White 81.99% |
| Metro/Micro Stats Area | Ontario, OR-ID |
| US Congressional District(s) | Idaho 1st |
| State House Districts | 9 |
| State Senate Districts | 9 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 81.99% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 1.05% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 16.97% |