Campbellsburg is a town in Brown Township, Washington County, in the U.S. state of Indiana.

[5] It was originally called Buena Vista in commemoration of the Battle of Buena Vista, but was later renamed Campbellsburg for Robert Campbell, who platted an addition to the town in 1851.

[7] According to the 2010 census, Campbellsburg has a total area of 0.99 square miles (2.56 km2), all land.

The racial makeup of the town was 98.5% White, 0.2% African American, 0.3% Asian, and 1.0% from two or more races.

26.3% of all households were made up of individuals, and 9.6% had someone living alone who was 65 years of age or older.

32.3% of all households were made up of individuals, and 13.8% had someone living alone who was 65 years of age or older.