Brook is a town in Iroquois Township, Newton County, in the U.S. state of Indiana.

[4] The George Ade House was listed on the National Register of Historic Places in 1976.

[5] Brook is located in northwestern Indiana, on State Route 16, about 6 miles (9.7 km) west of Interstate 65.

25.1% of all households were made up of individuals, and 13.6% had someone living alone who was 65 years of age or older.

21.4% of all households were made up of individuals, and 12.1% had someone living alone who was 65 years of age or older.

The Iroquois Conservation Club hosts an annual fishing contest for children under the age of 16 and their parents.

Grades kindergarten through 12 attend South Newton Schools in Kentland.