| Place Name | Knox |
| Place Type | Borough |
| ZIP Code(s) | 16232 |
| County | Clarion County |
| Area Code(s) | 814 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 1,094 |
| Population Growth Rate (2010-19) | -4.62% |
| Majority Ethnicity | White 99.25% |
| US Congressional District(s) | Pennsylvania 5th |
| State House Districts | 63 |
| State Senate Districts | 21 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 99.25% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.75% |