Blairstown is a city in Benton County, Iowa, United States.

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

There were 314 housing units at an average density of 633.4 per square mile (244.5/km2).

There were 314 housing units at an average density of 603.8 per square mile (233.1/km2).

28.1% of all households were made up of individuals, and 14.3% had someone living alone who was 65 years of age or older.

There were 309 housing units at an average density of 650.0 per square mile (251.0/km2).

28.7% of all households were made up of individuals, and 16.3% had someone living alone who was 65 years of age or older.

[10] Many Blairstown residents still play the Belgian yard game Rolle Bolle (called krulbollen in Belgium), first brought to the region by Belgian immigrants in the late 19th and early 20th centuries.

A game of Rolle Bolle is part of the annual Sauerkraut Days celebration.

Rolle Bolle is also played in the nearby towns of Belle Plaine, Clutier, Victor, Marengo, and Ladora.