| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 824 | 3,644 | 4,518 | |
| 2020 | R | 945 | 3,596 | 4,592 | |
| 2016 | R | 933 | 3,173 | 4,269 | |
| 2012 | R | 1,669 | 2,252 | 4,031 | |
| 2008 | D | 2,213 | 2,090 | 4,414 | |
| 2004 | R | 2,157 | 2,477 | 4,679 | |
| 2000 | R | 2,044 | 2,237 | 4,414 | |
| 1996 | D | 2,221 | 1,328 | 4,160 | |
| 1992 | D | 2,507 | 1,276 | 4,634 | |
| 1988 | D | 2,283 | 1,877 | 4,170 | |
| 1984 | R | 2,023 | 2,316 | 4,339 | |
| 1980 | D | 2,226 | 2,205 | 4,551 | |
| 1976 | D | 2,646 | 1,765 | 4,434 | |
| 1972 | R | 1,346 | 2,203 | 3,549 | |
| 1968 | D | 1,755 | 1,600 | 3,846 | |
| 1964 | D | 2,730 | 1,050 | 3,780 | |
| 1960 | R | 1,851 | 2,122 | 3,973 | |
| 1956 | D | 1,970 | 1,810 | 3,780 | |
| 1952 | D | 2,286 | 1,831 | 4,124 | |
| 1948 | D | 2,552 | 1,435 | 3,994 | |
| 1944 | D | 2,205 | 1,649 | 3,854 | |
| 1940 | D | 2,495 | 2,062 | 4,565 | |
| 1936 | D | 2,413 | 1,605 | 4,029 | |
| 1932 | D | 2,689 | 1,439 | 4,172 | |
| 1928 | R | 1,342 | 1,910 | 3,255 | |
| 1924 | D | 1,675 | 1,328 | 3,071 | |
| 1920 | D | 1,554 | 1,463 | 3,071 | |
| 1916 | D | 1,027 | 874 | 1,936 | |
| 1912 | D | 845 | 666 | 1,656 | |
| 1908 | D | 931 | 828 | 1,777 | |
| 1904 | D | 861 | 670 | 1,561 | |
| 1900 | D | 932 | 642 | 1,597 | |
| 1896 | D | 1,016 | 607 | 1,630 | |
| 1892 | D | 880 | 568 | 1,466 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Iron County's Ozark terrain anchors an economy historically tied to mining and timber, and its electorate has swung decisively toward Republican presidential candidates for decades, hitting a 62-point margin in 2024.
The unraveling was not abrupt. The Democratic margin in Iron County peaked at forty-four points in 1964; it narrowed steadily over the late twentieth century. The 2012 election delivered the county to the Republican party for the first time in many years, by a margin of fourteen points. By 2024, the margin had widened further.
The economic and demographic context is severe. Iron County's median household income of $48,850 is among the lowest of any county in the United States; 19% of residents live below the federal poverty line. The county's voting pattern over the last decade is most similar to that of Harrison County and Washington County.