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Data on this report is based on areas within the legal city boundary, outlined in black on the map. Any additional neighborhoods shown on the map are associated with the city by name and are included for reference only.

Decatur, IL
Real Estate & Demographic Data






Decatur profile


Living in Decatur



Decatur is a larger medium-sized city located in the state of Illinois. With a population of 69,097 people and 30 associated neighborhoods, Decatur is the 17th largest community in Illinois.

Residents of the city have the good fortune of having one of the shortest daily commutes compared to the rest of the country. On average, they spend only 18.76 minutes getting to work every day.

The education level of Decatur citizens is a little higher than the average for US cities and towns: 21.39% of adults in Decatur have at least a bachelor's degree.

The per capita income in Decatur in 2018 was $31,233, which is lower middle income relative to Illinois, and middle income relative to the rest of the US. This equates to an annual income of $124,932 for a family of four. However, Decatur contains both very wealthy and poor people as well.

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

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