The community itself was originally named Dunkley's Grove after the settler Hezekiah Dunklee, and was renamed after a town in England or Addison, New York.Adventureland amusement park was located in Addison (Lake and Medinah) during the 1960s and 1970s. The Addison Industrial District was the proposed location for the reconstruction of Comiskey Park in the late 1980s before this was voted down.
According to the 2010 census, Addison has a total area of 9.98 square miles (25.85 km2), of which 9.77 square miles (25.30 km2) (or 97.9%) is land and 0.21 square miles (0.54 km2) (or 2.1%) is water.
There were 11,649 households out of which 38.3% had children under the age of 18 living with them, 62.7% were married couples living together, 10.2% had a female householder with no husband present, and 21.9% were non-families. 16.9% of all households were made up of individuals and 4.8% had someone living alone who was 65 years of age or older. The average household size was 3.07 and the average family size was 3.46.
In the village, the population was spread out with 26.2% under the age of 18, 11.3% from 18 to 24, 32.0% from 25 to 44, 22.1% from 45 to 64, and 8.4% who were 65 years of age or older. The median age was 32 years. For every 100 females, there were 103.2 males. For every 100 females age 18 and over, there were 102.8 males.
The median income for a household in the village was $54,090, and the median income for a family was $59,007. Males had a median income of $39,718 versus $27,815 for females. The per capita income for the village was $21,201. 9.6% of the population and 7.2% of families were below the poverty line. Out of the total population, 13.2% of those under the age of 18 and 7.3% of those 65 and older were living below the poverty line.
Addison is home to Addison Trail High School and to Indian Trail Junior High School. The Elementary schools are: Wesley Elementary, Lake Park Elementary, Fullerton Elementary, Army Trail Elementary, Lincoln Elementary and Stone Elementary. St. Philip the Apostle, a private Catholic school and parish, is located in Addison and serves students from pre-kindergarten through 8th grade. Driscoll Catholic High School was located in Addison before closing in 2009. DeVry University and Chamberlain College of Nursing also call Addison home.
Another public place in Addison for education is the Addison Public Library. It offers thousands of books to residents, as well as computer privileges and various educational, creative, athletic and technical skill classes.
According to Addison's 2011 Comprehensive Annual Financial Report, the top employers in the city were:
Rich Veenstra is the Mayor of Addison. Other elected officials include Village Trustees Sam Nasti, Harry Theodore, Tom Hundley, Bill Lynch, Cathy Kluczny and Joe McDermott, and Village Clerk Lucille Zucchero. The town of Triggiano, Italy is the sister city of Addison.