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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.

DeKalb, IL
Real Estate & Demographic Data






DeKalb profile


Living in DeKalb



DeKalb is a medium-sized city located in the state of Illinois. With a population of 40,220 people and nine constituent neighborhoods, DeKalb is the 39th largest community in Illinois.

Also of interest is that DeKalb has more people living here who work in computers and math than 95% of the places in the US.

DeKalb is also a major college town with a large number of people who are 18 years or older and attending college. As is often the case in college towns, the many students that live in DeKalb have a strong influence on the local culture and entertainment scene, which may seem dormant by comparison in the summer months when much of the student population is away. In the fall, the return of students has a reinvigorating effect on the community. Because colleges are lasting institutions, they have a stabilizing effect on the economy by providing direct local benefits such as jobs for faculty and staff and spending by students. DeKalb’s economy is one such example of this.

The population of DeKalb is very well educated relative to most cities and towns in the nation, where the average community has 21.84% of its adult population holding a 4-year degree or higher: 35.62% of adults in DeKalb have a bachelor's degree or even advanced degree.

The per capita income in DeKalb in 2018 was $25,092, which is low income relative to Illinois, and lower middle income relative to the rest of the US. This equates to an annual income of $100,368 for a family of four. However, DeKalb contains both very wealthy and poor people as well.

DeKalb is an extremely ethnically-diverse city. The people who call DeKalb home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of DeKalb residents report their race to be White, followed by Black or African-American. DeKalb also has a sizeable Hispanic population (people of Hispanic origin can be of any race). People of Hispanic or Latino origin account for 16.09% of the city’s residents. Important ancestries of people in DeKalb include German, Irish, English, Italian, and Polish.

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