| 2026-05-19 | Hawkeye |
| 2025-10-03 | Like Miss Piggy and Captain Kirk, by birth |
| 2025-07-21 | Des Moines denizen |
| 2025-03-11 | Sioux City native |
| 2023-09-18 | Cedar Rapids native |
| 2023-01-08 | Like Captain James T. Kirk, by birth |
| 2022-07-12 | Voter in a certain early caucus |
| 2022-06-19 | Hawkeye |
| 2022-04-06 | Like some Quad Cities residents |
| 2021-12-26 | John Wayne, by birth |
| 2021-07-25 | Certain caucus voter |
| 2020-08-30 | John Wayne, by birth |
| 2019-08-28 | Herbert Hoover, by birth (uniquely among all U.S. presidents to date) |
| 2018-07-17 | Des Moines resident |
| 2018-06-10 | Any local in "The Music Man" |
| 2017-06-22 | Hawkeye |
| 2016-03-28 | Early caucusgoer |
| 2016-02-11 | Dweller on the upper Mississippi |
| 2015-04-27 | Hawkeye State native |
| 2014-11-16 | John Wayne or Johnny Carson, by birth |
| 2014-08-04 | Des Moines native |
| 2013-11-25 | Des Moines native |
| 2010-11-26 | Dweller along the Skunk River |
| 2010-08-03 | Herbert Hoover, by birth |
| 2010-02-25 | Any resident of 46-Across |
| 2009-12-29 | Hawkeye State native |
| 2009-07-13 | Cedar Rapids native |
| 2008-10-27 | Des Moines native |
| 2008-09-07 | Certain caucuser |
| 2008-07-01 | Des Moinesian or Davenporter |
| 2007-04-23 | Des Moines native |
| 2005-06-19 | Ann Landers was one |
| 2002-04-04 | Council Bluffs resident |
| 2002-01-02 | Hawkeye |
| 2000-09-01 | Buffalo Bill, e.g. |
| 2000-07-15 | Herbert Hoover, for one |
| 1999-12-07 | Hawkeye |
| 1998-03-30 | Des Moines native |
| 1998-01-30 | Davenport denizen |
| 1997-05-18 | Grant Wood, notably |
| 1996-09-12 | Herbert Hoover, e.g. |
| 1994-04-01 | Artist Grant Wood, e.g. |
| 1994-02-24 | Herbert Hoover, by birth |
| 1993-12-20 | Dubuque native |