Ravanna, Missouri
Ravanna is a census-designated place in Mercer County, Missouri, United States. It is located approximately seven miles northeast of Princeton on U.S. Route 136. The population was 98 at the 2010 census.
Ravanna was platted in 1857. A variant name was "Sonoma". A post office called Sonoma was established in 1855, the name was changed to Ravanna in 1858, and the post office closed in 1975. The present name most likely is a transfer from Ravenna, Ohio.
