Geraldine is a town in Chouteau County, Montana, United States.

[4][5] The Milwaukee Road built a branch line from Harlowton to Great Falls in 1916.

The town's wood-constructed railroad depot, also built in 1916, has been restored in recent years, now contains displays on the history of the area, and is a Montana Historic Site which is on the National Register of Historic Places.

[6] The Central Montana Rail runs a tourist train from Lewistown to Geraldine in the summer and passengers get to tour the restored depot.

According to the United States Census Bureau, the town has a total area of 0.52 square miles (1.35 km2), all land.

33.6% of all households were made up of individuals, and 18.2% had someone living alone who was 65 years of age or older.

About 2.4% of families and 6.5% of the population were below the poverty line, including 10.2% of those under the age of eighteen and 4.4% of those 65 or over.

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

Choteau County Library, headquartered in Fort Benton, has a branch in Geraldine.