| Place Name | Castanea Township |
| Place Type | Township |
| ZIP Code(s) | 17745 17751 |
| County | Clinton County |
| Area Code(s) | 272,570 |
| Timezone | Eastern Standard Time (EST) |
| Population (2021) | 1,156 |
| Majority Ethnicity | White 99.21% |
| Metro/Micro Stats Area | Lock Haven, PA |
| US Congressional District(s) | Pennsylvania 5th |
| State House Districts | 76 |
| State Senate Districts | 25 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 99.21% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0.26% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.53% |