
Topeka
- County:
- Mason County
- County Seat:
- No
- Area (mi²):
- 0.137
- State:
- Illinois
Topeka is a village located in Mason County, Illinois. Topeka has a 2025 population of 53. Topeka is currently declining at a rate of -1.85% annually and its population has decreased by -8.62% since the most recent census, which recorded a population of 58 in 2020.
The average household income in Topeka is $72,323 with a poverty rate of 0%. The median age in Topeka is 50 years: 36.6 years for males, and 55.3 years for females.