Naperville is a suburb of Chicago, located in DuPage and Will counties in the State of Illinois. Naperville was voted the second-best place to live in the United States in 2006. It was rated 1st on the list of best cities for early retirement in 2013 by Kiplinger. In a 2010 study, Naperville was named the wealthiest city in the Midwest and eleventh in the nation with a population over 75,000. It was ranked among the 
nation’s safest cities by USAToday. As of the 2010 census, the city had a total population of 141,853, which was estimated to have increased to 144,864 by July 2013. It is the fifth-largest city in Illinois, preceded by Chicago, Aurora, Rockford, and Joliet. Approximately 95,000 Napervillians live on the DuPage County side, while about 50,000 reside on the Will County side.
Naperville is located within the Illinois Technology and Research Corridor. Employers contributing to the population explosion of the 1980s and 1990s included: Bell Labs and Western Electric (now Alcatel-Lucent), Amoco (now BP and Ineos), Nalco, Nicor, and Edward Hospital. Tellabs has its corporate headquarters in Naperville, and ConAgra’s Grocery division branch office employs approximately 400 workers. OfficeMax moved its corporate headquarters there in 2006. Kraft Foods opened their Naperville site in 1968, and employs over 200 individuals at the plant, which supplies all Triscuit products for North America. Naperville is also home to the headquarters of Dukane Precast, and their double-wall precast concrete manufacturing plant. Fermilab and Argonne National Laboratory are also located nearby. Naperville was one of the ten fastest growing communities in the United States during the 1990s.
The Naperville area is home to many popular retailers, restaurants and shopping centers, such as downtown Naperville, Freedom Commons, Springbrook Prairie Pavilion, and the Route 59 and Ogden Avenue corridors. Naperville has over eleven automobile dealerships, and in October 2006, the city opened the country’s first public-private automobile test track, situated on a 9-acre (3.6 ha) course, at a cost of $1.5 million.
