Where to vote in Mason City, Iowa on November 3, 2026
- Election DayTue, Nov 3Tuesday, November 3
- Polls open7 a.m. – 8 p.m.Local time
- Election officeCerro Gordo County641-421-3034
Find your polling place Election office Voting dates
Mason City is in Cerro Gordo County. Mason City has about 26,853 people, by the U.S. Census Bureau's 2025 estimate, which also gives its county lines.
Cerro Gordo County auditor's office
Cerro Gordo County Auditor
Office: 220 N. Washington Ave., Mason City, IA 50401
Phone: 641-421-3034
Regular office hours: Monday to Friday, 8 a.m. to 4:30 p.m.
Website: cerrogordoauditor.gov
Check your registration and find your polling place at the Iowa Secretary of State voter page, the state's voter site.
Iowa voting dates for Mason City voters
| Date | What |
|---|---|
| Wed, Oct 14 Started | Early voting opens source |
| Mon, Oct 19, 5 p.m. | Pre-register to vote source |
| Mon, Oct 19, 5 p.m. | Request an absentee ballot by mail source |
| Mon, Nov 2 | Early voting ends source |
| Tue, Nov 3, 8 p.m. | Election Day: polls open 7 a.m. to 8 p.m. source |
| Tue, Nov 3, 8 p.m. | Register and vote on Election Day source |
| Tue, Nov 3, 8 p.m. | Return your absentee ballot source |
Mason City voting questions
Where do I vote in Mason City on Election Day?
At your assigned polling place, or a vote center where Cerro Gordo County uses them. Polls are open 7 a.m. to 8 p.m. local time. Enter your address on the Iowa page to find yours.
What is the phone number of the election office for Mason City?
641-421-3034, the Cerro Gordo County Auditor, 220 N. Washington Ave., Mason City, IA 50401.
Which county runs elections in Mason City?
Cerro Gordo County. Mason City voters register and vote with Cerro Gordo County.
More for Mason City voters
- Iowa voting deadlines 2026: registration, mail ballots, early voting and Election Day.
- Cerro Gordo County election office: address and phone.
- Who is on the Iowa 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 Iowa: Des Moines, Cedar Rapids, Davenport.
Office details are from the Iowa Secretary of State, County Auditor List (checked October 14, 2026). Dates are Iowa's, each linked to its source. Call the office before you go; city population and county lines are from the U.S. Census Bureau.