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Welcome to DuPage County

New to DuPage County? Want to know more?

DuPage County is a major county of Chicagoland, just west of Cook County and downtown Chicago. As far as population, it is just behind Cook County. It is also known as one of the wealthiest counties in the nation, and contains such treasures as Cantigny Park and the world-famous Fermilab.

Meet Your GOP Officials

For over 140 years, enlightened Republican leadership has made DuPage County a great place to live, raise a family and run a business. The DuPage County Republican Party and our associates are committed to ensuring you maintain the quality of life we have enjoyed for so many years. We encourage you to get to know your local GOP Elected officials as they are here to serve you.