Lincolnshire is a village in the Vernon Township region of Lake County, in the U.S. state of Illinois. The village is a suburb of Chicago, a city in the adjacent Cook County. Its population was 6,108 at the time of the 2000 census. Lincolnshire was incorporated on August 5, 1957, from the unincorporated Half Day area when land was purchased to build a residential subdivision. The community underwent an aggressive era of expansion from 1983 to the 1990s. The Des Plaines River bisects the village, passing from north to south; Illinois Route 22 also divides the village into two parts, crossing the village from east to west. Lincolnshire is home to the public secondary Adlai E. Stevenson High School institution and the schools that compose the elementary Lincolnshire-Prairie View School District 103. It serves as the headquarters for corporations including the global outsourcing company Hewitt Associates, and is the base of operations for the Newman-Haas Racing team. The village of Lincolnshire hosts several festivals (including one mirroring the Taste of Chicago) annually in either commercial establishments such as City Park or the Village Green, or in one of its nine public parks. Additionally, the village maintains a police department that closely collaborates with its local school districts. Lincolnshire manages a public works system at the direct expense of the village; it retrieves all of its water from the city of Highland Park, which derives its water from adjacent Lake Michigan. The village has a council-manager government and is a home-rule municipality. The mayor of Lincolnshire is Brett Blomberg.