Wanatah is a town in LaPorte County, Indiana, United States. The population was 1,048 at the 2010 census.
The first settlements were made at Wanatah in the 1850s when the railroad was extended to that point. Wanatah was platted in 1865. It was named for Wanata, a Native American leader.
Wanatah is located at 41°25′47″N 86°53′55″W (41.429648, -86.898498).
According to the 2010 census, Wanatah has a total area of 1.42 square miles (3.68 km2), all land.
As of the census of 2010, there were 1,048 people, 436 households, and 295 families living in the town. The population density was 738.0 inhabitants per square mile (284.9/km2). There were 459 housing units at an average density of 323.2 per square mile (124.8/km2). The racial makeup of the town was 96.9% White, 0.1% African American, 1.0% Native American, 0.2% Asian, 0.1% Pacific Islander, 0.2% from other races, and 1.5% from two or more races. Hispanic or Latino of any race were 3.0% of the population.
There were 436 households, of which 29.8% had children under the age of 18 living with them, 55.7% were married couples living together, 8.0% had a female householder with no husband present, 3.9% had a male householder with no wife present, and 32.3% were non-families.