Waukau is an unincorporated census-designated place in the town of Rushford, in Winnebago County, Wisconsin, United States.

The racial makeup of Waukau, Wisconsin was 97.8% White, 0.6% Black or African American, and 1.7% Multiracial American.

Married male, except separated, population 15 years and over was 59.4%.

Married female, except separated, population 15 years and over was 58.3%.

Mean travel time to work for workers 16 and over was 26.1 minutes.