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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 68,670 people and 30 associated neighborhoods, Decatur is the 17th largest community in Illinois.

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

Telecommuters are a relatively large percentage of the workforce: 7.50% of people work from home. While this number may seem small overall, as a fraction of the total workforce it is high relative to the nation. These workers are often telecommuters who work in knowledge-based, white-collar professions. For example, Silicon Valley has large numbers of people who telecommute. Other at-home workers may be self-employed people who operate small businesses out of their homes.

Compared to the rest of the country, citizens of Decatur spend much less time in their cars: on average, their commute to work is only 18.62 minutes. This also means that noise and pollution levels in the city are less than they would otherwise be.

The population of Decatur 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 Decatur, 21.26% have at least a bachelor's degree.

The per capita income in Decatur in 2022 was $31,990, 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 $127,960 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, English, Irish, Scottish, and French.

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