were founded in the 1930s. On July 31, 1985, a fire burned down the grandstand. The current six-story grandstand was completed and opened for use June 28, 1989. In February 2021, the track's owners, Churchill Downs Inc., announced that they would sell the site for redevelopment. In June 2021, the Chicago Bears of the National Football League emerged as prospective buyers of Arlington Park, raising speculation that they would leave Soldier Field (their current home stadium in downtown Chicago) and build a new stadium on the site, either alongside or directly atop the track. On September 29, 2021, the Bears and Churchill Downs reached a $197.2 million purchase and sell agreement for the property where the new stadium would be built. Population increase A population explosion took place in the 1950s and 1960s, when the spread of automobile ownership, together with the expansion of the Chicago-area economy, the baby boom, and white flight from the city, drove the number of people in Arlington Heights—expanded by a series of annexations—up to 64,884 by 1970. By then virtually all the available land had been taken up, and the formerly isolated depot stop found itself part of a continuous built-up area stretching from Lake Michigan to the Fox River. Geography Arlington Heights is located at (42.094976, −87.980873). According to the 2021 census gazetteer files, Arlington Heights has a total area of , of which (or 99.81%) is land and (or 0.19%) is water. Climate Demographics As of the 2020 census there were 77,676 people, 30,672 households, and 19,988 families residing in the village. The population density was . There were 33,356 housing units at an average density of . The racial makeup of the village was 78.95% White, 10.77% Asian, 1.63% African American, 0.22% Native American, 0.03% Pacific Islander, 2.64% from other races, and 5.76% from two or more races. Hispanic or Latino of any race were 6.94% of the population. There were 30,672 households, out of which 53.61% had children under the age of 18 living with them, 56.72% were married couples living together, 5.95% had a female householder with no husband present, and 34.83% were non-families. 30.04% of all households were made up of individuals, and 13.46% 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 2.42. The village's age distribution consisted of 22.9% under the