Petroleum is an unincorporated community in Allen County, Kentucky, United States. It is on U.S. Route 231 at the northern terminus of Kentucky Route 1147 south to Kentucky Route 3500, which ends at a junction with U.S. Route 31E/231 near the community.DeLorme (2010). Kentucky Atlas & Gazetteer (Map) (4th ed.). Yarmouth, ME: DeLorme. Page 81.
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