A post office called McKinley was established in 1892, and remained in operation until 1991.

[7] The city was named for three McKinley brothers (Duncan, John, and William) who were businessmen in the mining industry.

There were 67 housing units at an average density of 45.9 per square mile (17.7/km2).

32.1% of all households were made up of individuals, and 21.4% had someone living alone who was 65 years of age or older.

There were 43 housing units at an average density of 55.5 per square mile (21.4/km2).

32.4% of all households were made up of individuals, and 16.2% had someone living alone who was 65 years of age or older.

There were 16.7% of families and 30.5% of the population living below the poverty line, including 80.0% of under eighteens and none of those over 64.