Toston is a census-designated place in Broadwater County, Montana, United States. The population was 108 at the 2010 census.Toston is located at 46°10′19″N 111°26′43″W / 46.17194°N 111.44528°W / 46.17194; -111.44528.According to the United States Census Bureau, the CDP has a total area of 2.8 square miles, of which 2.6 square miles is land and 0.23 square miles, or 8.35%, is water.As of the census of 2000, there were 105 people, 44 households, and 28 families residing in the CDP. The population density was 58.5 people per square mile. There were 51 housing units at an average density of 28.4 per square mile. The racial makeup of the CDP was 94.29% White, 0.95% Native American, and 4.76% from two or more races.There were 44 households out of which 27.3% had children under the age of 18 living with them, 56.8% were married couples living together, 6.8% had a female householder with no husband present, and 34.1% were non-families. 29.