The Sanders County Jail is a historic jail built in 1907 in Thompson Falls in Sanders County, Montana.

It was listed on the National Register of Historic Places in 1986.

[1] It was built by contractors Christian & Gobelet for $5,000 and is a two-story brick building on a stone and mortar foundation.

[2] In 1984 it was the oldest surviving county building, and it was rented out to the Thompson Falls Historical Society.

This article about a property in Montana on the National Register of Historic Places is a stub.