[3] A post office called Saint Leo was established in 1880, and remained in operation until 1991.

[7] According to the United States Census Bureau, the city has a total area of 0.253 square miles (0.66 km2), all land.

There were 58 housing units at an average density of 223.1 per square mile (86.1/km2).

43.1% of all households were made up of individuals, and 17.7% had someone living alone who was 65 years of age or older.

40.7% of all households were made up of individuals, and 18.5% had someone living alone who was 65 years of age or older.

There were 7.1% of families and 11.4% of the population living below the poverty line, including 11.8% of under eighteens and 5.3% of those over 64.