| Place Name | Princeton |
| Place Type | City |
| ZIP Code(s) | 61356 |
| County | Bureau County |
| Area Code(s) | 815,779 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 7,831 |
| Population Growth Rate (2010-19) | 2.25% |
| Majority Ethnicity | White 96.08% |
| Metro/Micro Stats Area | Ottawa, IL |
| US Congressional District(s) | Illinois 16th |
| State House Districts | 74 |
| State Senate Districts | 37 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 96.08% |
| African American | 0.05% |
| Hispanic | 0% |
| Asian | 1.07% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 2.79% |