Granite City is a medium-sized city located in the state of Illinois. With a population of 27,121 people and eight associated neighborhoods, Granite City is the 75th largest community in Illinois.

The citizens of Granite City are slightly less educated than the national average of 21.84% for the average city or town: 14.58% of adults in Granite City have a bachelor's degree or advanced degree

The per capita income in Granite City in 2022 was $29,239, which is lower middle income relative to Illinois and the nation. This equates to an annual income of $116,956 for a family of four. However, Granite City contains both very wealthy and poor people as well.

Granite City is a very ethnically-diverse city. The people who call Granite City home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Granite City residents report their race to be White, followed by Black or African-American. Important ancestries of people in Granite City include German, Irish, English, Polish, and Italian.

The most common language spoken in Granite City is English. Other important languages spoken here include Italian and Spanish.