This district stretches across the lands of Cook, Lake, and McHenry Counties. Its borders embrace Evanston, Skokie, Arlington Heights, Des Plaines, Park Ridge, and much of Chicago's North Side.

The Ninth has stood at the crossroads of many eras. Though its borders have shifted with each great redrawing of the map, its heart has always remained among Chicago's northern suburbs. Within its domain, bustling city neighborhoods and peaceful suburban towns thrive together, creating a land of many peoples and traditions.

Since 1999, the district has been guarded by Democrat Jan Schakowsky. For decades, the Ninth has been a steadfast Democratic stronghold, consistently choosing progressive champions to represent its people. The concerns of its citizens are many. Great importance is placed on healthcare, the protection of the environment, and the pursuit of social justice. These ideals have shaped the district's path through every election.

The Ninth bears a Cook Partisan Voting Index of D+20, marking it as one of the Democratic faction's strongest bastions. Its people come from many backgrounds, with White, Asian, Hispanic, and Black communities all contributing to the district's character. Prosperous neighborhoods stand beside hardworking communities, creating a realm of varied fortunes. The district's median household income rises above the national average, and its people are renowned for their pursuit of knowledge, with many having completed the trials of higher learning.