Petrolia Community Profile

Petrolia is an unincorporated community situated along the Neosho River in the southwestern part of Allen County, located in southeast Kansas, in the central United States of America. Although official populations are not compiled for unincorporated places, the population of the surrounding Logan Township was 225 in the 2000 census.

 

~ Wikipedia

Petrolia is the only Allen County community located on the west side of the Neosho River.