Madison County, Iowa auditor's office: address and phone for 2026
The Iowa Secretary of State lists the Madison County Auditor at 112 N. John Wayne Dr., Winterset, IA 50273, phone 515-462-3914. In-person early voting is at this office: it opens Wednesday, October 14 and ends Monday, November 2. Call for its hours.
Madison County auditor's office
Madison County Auditor
Office: 112 N. John Wayne Dr., Winterset, IA 50273
Mailing address: PO Box 152, Winterset, IA 50273
Phone: 515-462-3914
Regular office hours: Monday to Friday, 8 a.m. to 4:30 p.m.
Website: madisoncounty.iowa.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 Madison County voters
| Date | What |
|---|---|
| Wed, Oct 14, 8:00 AM | Early voting opens In-person absentee voting starts Oct 14 at your county auditor's office. Hours vary by county. source |
| Mon, Oct 19, 5:00 PM | Pre-register to vote Pre-registration closes at 5 p.m. After that, register when you vote, with ID and proof of residence. source |
| Mon, Oct 19, 5:00 PM | Request an absentee ballot by mail Your county auditor must receive your request by 5 p.m. source |
| Mon, Nov 2, 4:30 PM | Early voting ends Last day for in-person early voting. Check your county auditor's hours. source |
| Tue, Nov 3, 8:00 PM | Election Day: polls open 7:00 a.m. to 8:00 p.m. Find your polling place through your county auditor. source |
| Tue, Nov 3, 8:00 PM | Register and vote on Election Day Register at your polling place with ID and proof of residence. Polls are open 7 a.m.–8 p.m. source |
| Tue, Nov 3, 8:00 PM | Return your absentee ballot Your county auditor must receive it by 8 p.m. on Election Day. source |
Madison County voting questions
What is the phone number for the Madison County auditor's office?
515-462-3914, the Auditor (Madison County's auditor's office on the Iowa Secretary of State, County Auditor List).
What is the address of the Madison County auditor's office?
112 N. John Wayne Dr., Winterset, IA 50273. Mailing address: PO Box 152, Winterset, IA 50273.
When does early voting start in Madison County?
Early voting opens Wednesday, October 14; early voting ends Monday, November 2, 2026. In-person absentee voting starts Oct 14 at your county auditor's office. Hours vary by county.
More for Iowa voters
- Who is on the Iowa ballot: every candidate on the state's official list, race by race.
- Iowa voting deadlines 2026: registration, mail ballots, early voting and Election Day.
- Every Iowa county's office.
- Early voting dates in every state.
Other Iowa counties: Adair, Adams, Allamakee, Appanoose, Audubon, Benton, Black Hawk, Boone, Bremer, Buchanan, Buena Vista, Butler, Calhoun, Carroll, Cass, Cedar, Cerro Gordo, Cherokee, Chickasaw, Clarke, Clay, Clayton, Clinton, Crawford, Dallas, Davis, Decatur, Delaware, Des Moines, Dickinson, Dubuque, Emmet, Fayette, Floyd, Franklin, Fremont, Greene, Grundy, Guthrie, Hamilton, Hancock, Hardin, Harrison, Henry, Howard, Humboldt, Ida, Iowa, Jackson, Jasper, Jefferson, Johnson, Jones, Keokuk, Kossuth, Lee, Linn, Louisa, Lucas, Lyon, Mahaska, Marion, Marshall, Mills, Mitchell, Monona, Monroe, Montgomery, Muscatine, O'Brien, Osceola, Page, Palo Alto, Plymouth, Pocahontas, Polk, Pottawattamie, Poweshiek, Ringgold, Sac, Scott, Shelby, Sioux, Story, Tama, Taylor, Union, Van Buren, Wapello, Warren, Washington, Wayne, Webster, Winnebago, Winneshiek, Woodbury, Worth, Wright.
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.