Where to vote in Waterloo, Illinois on November 3, 2026
- Election DayTue, Nov 3Tuesday, November 3
- Polls open6 a.m. – 7 p.m.Local time
- Election officeMonroe County618-939-8623
Find your polling place Election office Voting dates
Waterloo is in Monroe County. Waterloo has about 11,132 people, by the U.S. Census Bureau's 2025 estimate, which also gives its county lines.
Monroe County election authority
Find your Election Day polling place with the State Board of Elections' Polling Place Locator.
Illinois voting dates for Waterloo voters
| Date | What |
|---|---|
| Thu, Sep 24 Started | Mail ballots start going out source |
| Thu, Sep 24 Started | Early voting opens source |
| Tue, Oct 6 Ended | Last day to register by mail or at a registration site source |
| Wed, Oct 7 Started | Same-day registration opens source |
| Sun, Oct 18 | Register online source |
| Mon, Oct 19 | Early voting expands source |
| Thu, Oct 29 | Apply for a vote-by-mail ballot source |
| Mon, Nov 2 | Early voting ends source |
| Tue, Nov 3, 7 p.m. | Election Day: polls open 6 a.m. to 7 p.m. source |
| Tue, Nov 3, 7 p.m. | Register and vote the same day source |
| Tue, Nov 3 | Return your mail ballot source |
Waterloo voting questions
Where do I vote in Waterloo on Election Day?
At your assigned polling place, or a vote center where Monroe County uses them. Polls are open 6 a.m. to 7 p.m. local time. Enter your address on the Illinois page to find yours.
What is the phone number of the election office for Waterloo?
618-939-8623, the Monroe County Clerk, 100 South Main Street, Waterloo, IL 62298.
Which county runs elections in Waterloo?
Monroe County. Waterloo voters register and vote with Monroe County.
More for Waterloo voters
- Illinois voting deadlines 2026: registration, mail ballots, early voting and Election Day.
- Monroe County election office: address and phone.
- Who is on the Illinois ballot, race by race.
- What's on my ballot and where do I vote, from your street address.
- Voting in every major U.S. city.
Other big cities in Illinois: Chicago, Aurora, Naperville, Joliet, Rockford, Elgin, Springfield, Peoria.
Office details are from the Illinois State Board of Elections, Election Authorities (checked October 14, 2026). Dates are Illinois's, each linked to its source. Call the office before you go; city population and county lines are from the U.S. Census Bureau.