
Princeton township
- County:
- Bureau County
- County Seat:
- No
- Area (mi²):
- 36.545
- State:
- Illinois
Princeton township is located in Bureau County, Illinois. Princeton township has a 2025 population of 9,009. Princeton township is currently declining at a rate of -0.23% annually and its population has decreased by -2.02% since the most recent census, which recorded a population of 9,195 in 2020.
The average household income in Princeton township is $85,155 with a poverty rate of 14.11%. The median age in Princeton township is 45.7 years: 41.1 years for males, and 49.6 years for females.