Rollins is a census-designated place (CDP) in Lake County, Montana, United States. The population was 183 at the 2000 census.
Rollins is located at 47°54′28″N 114°11′43″W / 47.90778°N 114.19528°W / 47.90778; -114.19528 (47.907804, -114.195343).
According to the United States Census Bureau, the CDP has a total area of 2.9 square miles (7.5 km), all of it land.
As of the census of 2000, there were 183 people, 83 households, and 60 families residing in the CDP. The population density was 62.5 people per square mile (24.1/km²). There were 218 housing units at an average density of 74.5 per square mile (28.7/km²). The racial makeup of the CDP was 98.36% White, 0.55% Native American, and 1.09% from two or more races.
There were 83 households out of which 14.5% had children under the age of 18 living with them, 71.1% were married couples living together, 1.2% had a female householder with no husband present, and 27.7% were non-families. 26.5% of all households were made up of individuals and 13.3% had someone living alone who was 65 years of age or older. The average household size was 2.20 and the average family size was 2.62.
In the CDP, the population was spread out with 15.3% under the age of 18, 3.8% from 18 to 24, 13.7% from 25 to 44, 34.4% from 45 to 64, and 32.8% who were 65 years of age or older. The median age was 54 years. For every 100 females, there were 98.9 males. For every 100 females age 18 and over, there were 96.2 males.
The median income for a household in the CDP was $31,875, and the median income for a family was $34,821. Males had a median income of $19,583 versus $33,750 for females. The per capita income for the CDP was $27,255. About 7.5% of families and 7.2% of the population were below the poverty line, including none of those under the age of eighteen or sixty five or over.