Peoria is an unincorporated community in Franklin County, Kansas, United States. History Peoria was founded in the late 1850s. it was named for the Peoria tribe, who once owned the town site. A post office opened in Peoria in 1857, closed in 1859, reopened in 1860, and closed permanently in 1934. Geography Climate Peoria experiences a Cfa climate (Subtropical) climate. References Further reading External links Franklin County maps: Current, Historic, KDOT Unincorporated communities in Franklin County, Kansas Unincorporated communities in Kansas 1857 establishments in Kansas Territory