Blue River is a village in Grant County, Wisconsin, United States.

[5] According to the United States Census Bureau, the village has a total area of 0.80 square miles (2.07 km2), all of it land.

There were 217 housing units at an average density of 271.3 per square mile (104.7/km2).

32.8% of all households were made up of individuals, and 14.6% had someone living alone who was 65 years of age or older.

There were 205 housing units at an average density of 276.1 per square mile (107.0/km2).

33.3% of all households were made up of individuals, and 18.0% had someone living alone who was 65 years of age or older.