DuPage County, Illinois

DuPage County Treasurer

2 candidates are tracked for DuPage County Treasurer on the November 3, 2026 ballot: Yeena Yoo and Gwen Henry. Candidate information follows official DuPage County election filings; verify with the official election office linked below.

About this race

Yeena Yoo ran unopposed for the Democratic nomination; sitting Treasurer Gwen Henry ran unopposed for the Republican nomination. They meet on the November 3 ballot, per the county's official canvass.

What this office does

County treasurer. The county treasurer collects property taxes and other revenue, holds the county's funds, and invests them under state rules. The treasurer distributes tax collections to the county, cities, school districts and special districts that levy them. The office is a custodian of public money, not the body that sets the tax rate.

This race. Every voter in DuPage County votes on this seat. The sitting officeholder, Gwen Henry, is on the ballot.

Illinois › DuPage County › DuPage County Treasurer

Yeena Yoo

Democratic

Top priorities

Reduce duplicate tax payments and modernize the Treasurer's office software
Redesign the Treasurer's website and online payment portal for easier use

Per the campaign site.

Biography

Yeena Yoo is the Democratic candidate for DuPage County Treasurer. Elected to the DuPage County Board in 2022, she chairs its Economic Development Committee and previously chaired its Technology Committee, per her campaign site. She works as a legal aid attorney advocating for seniors, veterans and survivors of domestic violence, per her campaign site.

Campaign site (opens in a new tab)

Gwen Henry

Republican Incumbent

Biography

Gwen Henry is a certified public accountant who has served as DuPage County Treasurer since 2006 and previously served as mayor of Wheaton and as a DuPage County Board member and forest preserve commissioner, per DuPage County official biography.

Campaign site (opens in a new tab)

Next on your ballotDuPage County Board District 1 (4-Year Term)

See your full ballot

Voting info and more

Questions about this race

Who is running for DuPage County Treasurer in 2026?

When is the DuPage County Treasurer election in Illinois?

Election Day is Tuesday, November 3, 2026. Registration deadlines, early voting dates and mail ballot rules for Illinois are on the Illinois election hub at theballotbrief.com.

How do I see my exact DuPage County ballot?

Enter your ZIP code in the lookup at theballotbrief.com for the statewide and congressional races, or a full street address to add the county, city and district contests for that location.

Verify this race

Candidate roster from official DuPage County and state election office filings, last verified September 29, 2026. Bios and priorities carry their attribution inline.

Cross-check with the official Illinois election office, or see the full DuPage County sample ballot and your exact ballot by address.

The rest of your DuPage County ballot

47 tracked races in DuPage County, Illinois. Landed here from another county's search? Look up your own ballot below.

Also on your ballot

DuPage County Board District 1 (2-Year Term)DuPage County Board District 2 (4-Year Term)DuPage County Board District 2 (2-Year Term)See all 47 DuPage County races

Candidate profiles

Yeena Yoo, full profile Gwen Henry, full profile Official Illinois election office