Persifer township
- County:
- Knox County
- County Seat:
- No
- Area (mi²):
- 34.725
- State:
- Illinois
Persifer township is located in Knox County, Illinois. Persifer township has a 2026 population of 1,063. Persifer township is currently growing at a rate of 0.28% annually but its population has decreased by -1.94% since the most recent census, which recorded a population of 1,084 in 2020.
The median household income in Persifer township is $73,906 with a poverty rate of 3.36%. The median age in Persifer township is 60.3 years: 62.7 years for males, and 57.5 years for females. For every 100 females there are 87.4 males.