Topeka is located in Mason County. About 60 people live here (as of 2020). Between 2010 and 2020, the population declined from 76 to 60. There are about 19 streets in Topeka. The region was founded in 1869. The postal codes are 61567. The dialing code is 309. Topeka is town in Mason County, Illinois, United States.
| Year built | 1869 |
| Area | 0.1 |
| Elevation | 473 |
| Located in | Mason County |
| Postal code | 61567 |
| Country | United States |
| Population | 60 |
| Official name | Topeka |
| Bike path |
| Bike lane on roadway |
| Cycling allowed on bus lane |
| Bicycle street |
| Open to cyclists |
| Open to cyclists, good path |
| Cycling prohibited |
| Cobblestone |
| Long-distance bike route | (depending on scale) |
| Long-distance bike route |
| Long-distance hiking trail | (depending on scale) |
| Long-distance hiking trail |
| Pedestrians prohibited |