[5] St. Charles was laid out in 1906, and most likely was named in honor of Charlie Johnson, a first settler.

[6] According to the United States Census Bureau, the CDP has a total area of 0.2 square miles (0.52 km2), all land.

There were 12 housing units at an average density of 61.8 per square mile (23.9/km2).

25.0% of all households were made up of individuals, and 25.0% had someone living alone who was 65 years of age or older.

There are 100.0% of families living below the poverty line and 75.0% of the population, including no under eighteens and 50.0% of those over 64.