Brillion (/ˈbrɪljən/ BRIL-yən)[6] is a city in Calumet County, Wisconsin, United States.

The city is located within the Town of Brillion, though it is politically independent.

[9] As of the census[3] of 2010, there were 3,148 people, 1,298 households, and 851 families living in the city.

There were 1,349 housing units at an average density of 494.1 per square mile (190.8/km2).

29.7% of all households were made up of individuals, and 15.7% had someone living alone who was 65 years of age or older.

There were 1,230 housing units at an average density of 472.7 per square mile (182.7/km2).

25.2% of all households were made up of individuals, and 12.3% had someone living alone who was 65 years of age or older.