Joliet is a relatively large city located in the state of Illinois. With a population of 150,033 people and 48 associated neighborhoods, Joliet is the third largest community in Illinois.

The population of Joliet overall has a level of education that is slightly above the US average for all US cities and towns of 21.84%. Of adults 25 and older in Joliet, 24.87% have at least a bachelor's degree.

The per capita income in Joliet in 2018 was $34,169, which is middle income relative to Illinois and the nation. This equates to an annual income of $136,676 for a family of four. However, Joliet contains both very wealthy and poor people as well.

Joliet is an extremely ethnically-diverse city. The people who call Joliet home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Joliet residents report their race to be White, followed by Black or African-American. Joliet also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 33.54% of the city’s residents. Important ancestries of people in Joliet include German, Irish, Polish, Italian, and English.

The most common language spoken in Joliet is English. Other important languages spoken here include Spanish and Polish.