Brockton is a census-designated place and former town in Roosevelt County, Montana, United States.

[4] Fort Peck Indian Reservation was opened to non-Native settlers in 1913 and the town boomed.

[6] According to the United States Census Bureau, the town has a total area of 0.23 square miles (0.60 km2), all land.

[7] Wolf Point 29 ENE is a weather station located roughly 12 miles (19.3 km) northwest of Brockton.

The racial makeup of the town was 13.06% White, 84.90% Native American, 0.41% Pacific Islander, and 1.63% from two or more races.

Amtrak’s Empire Builder, which operates between Seattle/Portland and Chicago, passes through the town on BNSF tracks, but makes no stop.

The nearest station is located in Wolf Point, 35 miles (56 km) to the west.

Brockton School District educates students from kindergarten through 12th grade.