 About 9.0% of families and 14.3% of the population were below the poverty line, including 22.2% of those under age 18 and 6.7% of those age 65 or over.In 1843, Michigan's Upper Peninsula was divided into Mackinac, Chippewa, Marquette, Schoolcraft, Delta, and Ontonagon Counties.In 1845, a portion of Ontonagon County was partitioned to be part of Houghton County.