Rosston is a town in Harper County, Oklahoma, United States.

[4] The Old Settler's Irrigation Ditch near Rosston is on the National Register of Historic Places listings in Beaver County, Oklahoma.

According to the United States Census Bureau, the town has a total area of 0.3 square miles (0.78 km2), all land.

30.4% of all households were made up of individuals, and 17.4% had someone living alone who was 65 years of age or older.

There were 11.1% of families and 11.2% of the population living below the poverty line, including 7.4% of under eighteens and 33.3% of those over 64.