Swan Valley is a city in Bonneville County, Idaho, United States.

There were 135 housing units at an average density of 11.7 per square mile (4.5/km2).

26.1% of all households were made up of individuals, and 14.2% had someone living alone who was 65 years of age or older.

There were 117 housing units at an average density of 11.4 per square mile (4.4/km2).

19.0% of all households were made up of individuals, and 11.4% had someone living alone who was 65 years of age or older.

About 3.8% of families and 9.2% of the population were below the poverty line, including 14.3% of those under the age of eighteen and 5.7% of those 65 or over.