The map below shows the political leanings of people in and around DuPage County. Darker red areas have almost entirely Republican voters, dark blue areas vote mostly for Democrats, and areas in lighter shades or in light purple are areas where the vote is usually split between parties.
Politics Key
DuPage County tends to be a political battleground based on voting results in recent elections. Compared to other nearby counties, DuPage County has more republican voters. Compared to the nation as a whole, DuPage County leans more democratic.
Highly educated populations with bachelor’s degrees or higher tend to vote for more liberal candidates. In DuPage County, 48.84% of all adults have earned a bachelor’s degree or higher. Educated women are far less likely to vote for conservatives, and in DuPage County women make up 50.93% of the population.
Older Americans tend to vote more conservatively. Members of the Boomer and Silent generations (born 1928-1964) more often vote for republicans while GenX, Millennials (born 1965-1996) and younger generations consistently support democrats. The median age in DuPage County is 40.1, which is older than the national median age of 38.1.
Is DuPage County a political battleground? Across all types of political contests in DuPage County, including state, local and presidential elections, races come within five percentage points 37% of the time.
Note: Federal, local, and state elections are weighed based on the recency of the election and the importance most voters assign to each seat.
Nearby Counties
- Kane County, IL: more liberal voters
- Cook County, IL: more liberal voters
- Will County, IL: more liberal voters
- Kendall County, IL: more conservative voters
- Lake County, IL: more liberal voters
- McHenry County, IL: more conservative voters
- DeKalb County, IL: more conservative voters
- Grundy County, IL: more conservative voters
- Lake County, IN: more liberal voters
- Kenosha County, WI: more liberal voters
Counties with Similar Populations
- Bergen County, NJ: more liberal voters
- Shelby County, TN: more liberal voters
- Marion County, IN: more liberal voters
- Pinellas County, FL: more conservative voters
- Fairfield County, CT: more liberal voters
- Milwaukee County, WI: more liberal voters
- Erie County, NY: more liberal voters
- Westchester County, NY: more liberal voters
- Fresno County, CA: more liberal voters
- Honolulu County, HI: more liberal voters
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