Illinois's 6th congressional district

Illinois's 6th congressional district. The district is located in the northeastern part of the state, encompassing a significant portion of the Chicago suburbs in DuPage County and Cook County. It is currently represented by Democrat Sean Casten, who has held the seat since 2019. The district is considered politically competitive, having shifted from a longtime Republican stronghold to a Democratic-leaning area in recent election cycles.

History

The district's boundaries have been redrawn multiple times following the United States Census and subsequent redistricting processes by the Illinois General Assembly. For much of the late 20th and early 21st centuries, it was a reliably Republican seat, represented by figures such as Henry Hyde, a prominent conservative known for the Hyde Amendment. The political landscape began to change significantly after the 2010 census, when a new map drawn by the Democratic-controlled state legislature altered its composition. This shift was cemented in the 2018 election, when Casten defeated longtime incumbent Peter Roskam, signaling a major realignment in the Chicago metropolitan area's suburban politics, a trend mirrored in districts like Illinois's 14th congressional district.

Geography

The district covers a swath of affluent and well-educated suburbs west and northwest of Chicago. Major municipalities within its boundaries include Naperville, Downers Grove, Elmhurst, Lombard, and parts of Palatine. It also contains areas around O'Hare International Airport. The geography is predominantly residential and commercial, with significant corporate presence from companies like Lisle-based Molex and Nalco Holding Company. Key transportation corridors include Interstate 88 and Interstate 290, and it is served by rail lines of the Metra commuter system.

Demographics

According to data from the United States Census Bureau and the American Community Survey, the district has a highly educated and relatively affluent population. A large percentage of residents hold bachelor's degrees or higher, with many employed in professional, scientific, and technical services. The racial and ethnic composition is predominantly non-Hispanic white, with growing Asian American and Hispanic communities. Religious institutions are diverse, including notable congregations like the Islamic Center of Naperville. The district's socioeconomic profile is similar to other changing suburban areas analyzed by the Cook Political Report.

Recent election results

The district's electoral history reflects its political transformation. In the 2016 election, Republican Peter Roskam won re-election comfortably. The 2018 election became a national target for the Democratic Congressional Campaign Committee, resulting in Casten's victory. Casten defended the seat against Republican challenger Jeanne Ives in 2020 and again in 2022 against Keith Pekau. These results have been analyzed by organizations like FiveThirtyEight as indicative of broader suburban shifts away from the Republican Party during the Presidency of Donald Trump.

List of representatives

The following individuals have represented the district in the United States House of Representatives: * Henry Hyde (Republican), served from 1975 to 2007. * Peter Roskam (Republican), served from 2007 to 2019. * Sean Casten (Democratic), serving since 2019.

Category:Illinois's congressional districts