[3] Fleming is a part of the Sterling, CO Micropolitan Statistical Area.

[7] At the 2020 United States Census, the town had a total area of 313 acres (1.267 km2), all of it land.

[8] As of the census[11] of 2000, there were 426 people, 169 households, and 115 families residing in the town.

There were 198 housing units at an average density of 382.5 per square mile (147.7/km2).

30.2% of all households were made up of individuals, and 14.8% had someone living alone who was 65 years of age or older.