Rock River is a town in Albany County, Wyoming, United States.

[6] According to the United States Census Bureau, the town has a total area of 2.33 square miles (6.03 km2), all land.

21.3% of all households were made up of individuals, and 8.5% had someone living alone who was 65 years of age or older.

The racial makeup of the town was 96.17% White, 3.40% Native American and 0.43% Asian.

24.5% of all households were made up of individuals, and 12.8% had someone living alone who was 65 years of age or older.

About 14.1% of families and 24.2% of the population were below the poverty line, including 39.5% of those under the age of eighteen and 26.3% of those 65 or over.

Public education in the town of Rock River is provided by Rock River school, which is a part of Albany County School District #1.