Elections / 2016 · President · IA
Iowa — 2016 presidential election
Recent presidential results
Akashicstate2016 presidential electionIowa · PresidentTrumpR+9.3
How it voted
Share of the 2016 vote
| Donald Trump ✓Republican | 50.7% | 800,983 |
|---|---|---|
| Hillary ClintonDemocratic | 41.3% | 653,669 |
| OtherAll other candidates | 8.0% | 126,719 |
2016presidential margin
D+60R+60
99 counties, each filled by 2016 D-vs-R margin. Hover any county for its result.
Iowa cast 6 electoral votes this cycle.
County-level results (99 counties) — table
| County | Winner | Margin |
|---|---|---|
| Adair County, IA | Republican | R+34.5 |
| Adams County, IA | Republican | R+38.9 |
| Allamakee County, IA | Republican | R+23.8 |
| Appanoose County, IA | Republican | R+35.8 |
| Audubon County, IA | Republican | R+30.3 |
| Benton County, IA | Republican | R+25.4 |
| Black Hawk County, IA | Democratic | D+7.3 |
| Boone County, IA | Republican | R+13.6 |
| Bremer County, IA | Republican | R+13.5 |
| Buchanan County, IA | Republican | R+14.8 |
| Buena Vista County, IA | Republican | R+24.4 |
| Butler County, IA | Republican | R+36.4 |
| Calhoun County, IA | Republican | R+39.7 |
| Carroll County, IA | Republican | R+31.2 |
| Cass County, IA | Republican | R+39.0 |
| Cedar County, IA | Republican | R+17.6 |
| Cerro Gordo County, IA | Republican | R+7.6 |
| Cherokee County, IA | Republican | R+39.8 |
| Chickasaw County, IA | Republican | R+22.6 |
| Clarke County, IA | Republican | R+27.7 |
| Clay County, IA | Republican | R+41.7 |
| Clayton County, IA | Republican | R+22.6 |
| Clinton County, IA | Republican | R+5.1 |
| Crawford County, IA | Republican | R+37.3 |
| Dallas County, IA | Republican | R+9.4 |
| Davis County, IA | Republican | R+44.3 |
| Decatur County, IA | Republican | R+28.9 |
| Delaware County, IA | Republican | R+29.3 |
| Des Moines County, IA | Republican | R+6.8 |
| Dickinson County, IA | Republican | R+35.4 |
| Dubuque County, IA | Republican | R+1.2 |
| Emmet County, IA | Republican | R+36.7 |
| Fayette County, IA | Republican | R+19.1 |
| Floyd County, IA | Republican | R+14.7 |
| Franklin County, IA | Republican | R+33.1 |
| Fremont County, IA | Republican | R+39.7 |
| Greene County, IA | Republican | R+23.2 |
| Grundy County, IA | Republican | R+38.5 |
| Guthrie County, IA | Republican | R+32.6 |
| Hamilton County, IA | Republican | R+22.3 |
| Hancock County, IA | Republican | R+40.3 |
| Hardin County, IA | Republican | R+28.6 |
| Harrison County, IA | Republican | R+36.7 |
| Henry County, IA | Republican | R+30.3 |
| Howard County, IA | Republican | R+20.1 |
| Humboldt County, IA | Republican | R+45.0 |
| Ida County, IA | Republican | R+51.1 |
| Iowa County, IA | Republican | R+23.6 |
| Jackson County, IA | Republican | R+18.9 |
| Jasper County, IA | Republican | R+17.9 |
| Jefferson County, IA | Republican | R+0.5 |
| Johnson County, IA | Democratic | D+37.6 |
| Jones County, IA | Republican | R+18.9 |
| Keokuk County, IA | Republican | R+40.7 |
| Kossuth County, IA | Republican | R+35.6 |
| Lee County, IA | Republican | R+15.8 |
| Linn County, IA | Democratic | D+8.9 |
| Louisa County, IA | Republican | R+28.0 |
| Lucas County, IA | Republican | R+37.3 |
| Lyon County, IA | Republican | R+66.4 |
| Madison County, IA | Republican | R+30.8 |
| Mahaska County, IA | Republican | R+44.9 |
| Marion County, IA | Republican | R+30.5 |
| Marshall County, IA | Republican | R+8.2 |
| Mills County, IA | Republican | R+38.3 |
| Mitchell County, IA | Republican | R+23.6 |
| Monona County, IA | Republican | R+40.5 |
| Monroe County, IA | Republican | R+40.5 |
| Montgomery County, IA | Republican | R+41.6 |
| Muscatine County, IA | Republican | R+6.2 |
| O'Brien County, IA | Republican | R+59.5 |
| Osceola County, IA | Republican | R+60.9 |
| Page County, IA | Republican | R+43.3 |
| Palo Alto County, IA | Republican | R+35.4 |
| Plymouth County, IA | Republican | R+51.2 |
| Pocahontas County, IA | Republican | R+44.4 |
| Polk County, IA | Democratic | D+11.3 |
| Pottawattamie County, IA | Republican | R+21.1 |
| Poweshiek County, IA | Republican | R+6.5 |
| Ringgold County, IA | Republican | R+38.9 |
| Sac County, IA | Republican | R+46.3 |
| Scott County, IA | Democratic | D+1.5 |
| Shelby County, IA | Republican | R+41.9 |
| Sioux County, IA | Republican | R+68.1 |
| Story County, IA | Democratic | D+12.3 |
| Tama County, IA | Republican | R+20.0 |
| Taylor County, IA | Republican | R+44.1 |
| Union County, IA | Republican | R+27.2 |
| Van Buren County, IA | Republican | R+46.8 |
| Wapello County, IA | Republican | R+20.4 |
| Warren County, IA | Republican | R+16.0 |
| Washington County, IA | Republican | R+20.1 |
| Wayne County, IA | Republican | R+45.2 |
| Webster County, IA | Republican | R+21.3 |
| Winnebago County, IA | Republican | R+25.9 |
| Winneshiek County, IA | Republican | R+0.8 |
| Woodbury County, IA | Republican | R+19.3 |
| Worth County, IA | Republican | R+21.4 |
| Wright County, IA | Republican | R+31.3 |
Nominees: Hillary Clinton (D) · Donald Trump (R)
Iowa's presidential margins
1892–2024, the 2016 contest in context
| Year | Margin (D minus R) |
|---|---|
| 1892 | −5.3% |
| 1896 | −12.6% |
| 1900 | −18.6% |
| 1904 | −32.7% |
| 1908 | −15.0% |
| 1912 | +13.3% |
| 1916 | −11.4% |
| 1920 | −45.5% |
| 1924 | −38.6% |
| 1928 | −24.2% |
| 1932 | +17.7% |
| 1936 | +11.7% |
| 1940 | −4.4% |
| 1944 | −4.5% |
| 1948 | +2.7% |
| 1952 | −28.2% |
| 1956 | −18.4% |
| 1960 | −13.5% |
| 1964 | +24.0% |
| 1968 | −12.2% |
| 1972 | −17.1% |
| 1976 | −1.0% |
| 1980 | −12.7% |
| 1984 | −7.4% |
| 1988 | +10.2% |
| 1992 | +6.0% |
| 1996 | +10.3% |
| 2000 | +0.3% |
| 2004 | −0.7% |
| 2008 | +9.5% |
| 2012 | +5.8% |
| 2016 | −9.3% |
| 2020 | −8.2% |
| 2024 | −13.2% |
County-by-county results — 99 counties
| County | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| Adair County | R | 1,133 | 2,461 | 3,848 | |
| Adams County | R | 565 | 1,395 | 2,131 | |
| Allamakee County | R | 2,421 | 4,093 | 7,035 | |
| Appanoose County | R | 1,814 | 4,033 | 6,196 | |
| Audubon County | R | 1,080 | 2,136 | 3,486 | |
| Benton County | R | 4,678 | 8,232 | 13,971 | |
| Black Hawk County | D | 32,233 | 27,476 | 65,007 | |
| Boone County | R | 5,541 | 7,484 | 14,310 | |
| Bremer County | R | 5,356 | 7,208 | 13,691 | |
| Buchanan County | R | 3,970 | 5,510 | 10,377 | |
| Buena Vista County | R | 2,856 | 4,903 | 8,381 | |
| Butler County | R | 2,157 | 4,921 | 7,583 | |
| Calhoun County | R | 1,398 | 3,468 | 5,218 | |
| Carroll County | R | 3,309 | 6,638 | 10,682 | |
| Cass County | R | 1,951 | 4,761 | 7,198 | |
| Cedar County | R | 3,599 | 5,295 | 9,631 | |
| Cerro Gordo County | R | 9,862 | 11,621 | 23,137 | |
| Cherokee County | R | 1,679 | 4,192 | 6,315 | |
| Chickasaw County | R | 2,266 | 3,742 | 6,518 | |
| Clarke County | R | 1,465 | 2,713 | 4,509 | |
| Clay County | R | 2,249 | 5,877 | 8,706 | |
| Clayton County | R | 3,237 | 5,317 | 9,217 | |
| Clinton County | R | 10,095 | 11,276 | 23,347 | |
| Crawford County | R | 1,991 | 4,617 | 7,037 | |
| Dallas County | R | 15,701 | 19,339 | 38,588 | |
| Davis County | R | 977 | 2,723 | 3,943 | |
| Decatur County | R | 1,201 | 2,296 | 3,784 | |
| Delaware County | R | 2,957 | 5,694 | 9,339 | |
| Des Moines County | R | 8,212 | 9,529 | 19,271 | |
| Dickinson County | R | 3,056 | 6,753 | 10,457 | |
| Dubuque County | R | 22,850 | 23,460 | 50,221 | |
| Emmet County | R | 1,357 | 3,124 | 4,810 | |
| Fayette County | R | 3,689 | 5,620 | 10,098 | |
| Floyd County | R | 3,179 | 4,375 | 8,159 | |
| Franklin County | R | 1,493 | 3,163 | 5,046 | |
| Fremont County | R | 963 | 2,407 | 3,633 | |
| Greene County | R | 1,691 | 2,820 | 4,876 | |
| Grundy County | R | 1,856 | 4,527 | 6,944 | |
| Guthrie County | R | 1,732 | 3,628 | 5,816 | |
| Hamilton County | R | 2,726 | 4,463 | 7,785 | |
| Hancock County | R | 1,587 | 3,977 | 5,933 | |
| Hardin County | R | 2,787 | 5,254 | 8,639 | |
| Harrison County | R | 2,131 | 4,902 | 7,552 | |
| Henry County | R | 2,904 | 5,779 | 9,500 | |
| Howard County | R | 1,677 | 2,611 | 4,640 | |
| Humboldt County | R | 1,252 | 3,568 | 5,141 | |
| Ida County | R | 792 | 2,655 | 3,648 | |
| Iowa County | R | 3,084 | 5,205 | 9,002 | |
| Jackson County | R | 3,837 | 5,824 | 10,504 | |
| Jasper County | R | 7,109 | 10,560 | 19,226 | |
| Jefferson County | R | 3,710 | 3,748 | 8,285 | |
| Johnson County | D | 50,200 | 21,044 | 77,476 | |
| Jones County | R | 3,787 | 5,720 | 10,236 | |
| Keokuk County | R | 1,342 | 3,390 | 5,035 | |
| Kossuth County | R | 2,543 | 5,653 | 8,742 | |
| Lee County | R | 6,215 | 8,803 | 16,347 | |
| Linn County | D | 58,935 | 48,390 | 118,116 | |
| Louisa County | R | 1,648 | 3,069 | 5,076 | |
| Lucas County | R | 1,239 | 2,877 | 4,392 | |
| Lyon County | R | 920 | 5,192 | 6,431 | |
| Madison County | R | 2,678 | 5,360 | 8,706 | |
| Mahaska County | R | 2,619 | 7,432 | 10,723 | |
| Marion County | R | 5,482 | 10,962 | 17,991 | |
| Marshall County | R | 7,652 | 9,146 | 18,175 | |
| Mills County | R | 2,090 | 5,067 | 7,772 | |
| Mitchell County | R | 1,888 | 3,190 | 5,521 | |
| Monona County | R | 1,247 | 3,120 | 4,629 | |
| Monroe County | R | 1,056 | 2,638 | 3,907 | |
| Montgomery County | R | 1,314 | 3,436 | 5,102 | |
| Muscatine County | R | 8,368 | 9,584 | 19,623 | |
| O'Brien County | R | 1,315 | 5,752 | 7,460 | |
| Osceola County | R | 552 | 2,531 | 3,251 | |
| Page County | R | 1,807 | 4,893 | 7,121 | |
| Palo Alto County | R | 1,398 | 3,081 | 4,760 | |
| Plymouth County | R | 2,885 | 9,680 | 13,274 | |
| Pocahontas County | R | 963 | 2,702 | 3,918 | |
| Polk County | D | 119,804 | 93,492 | 233,385 | |
| Pottawattamie County | R | 15,355 | 24,447 | 43,058 | |
| Poweshiek County | R | 4,304 | 4,946 | 9,916 | |
| Ringgold County | R | 753 | 1,824 | 2,752 | |
| Sac County | R | 1,270 | 3,703 | 5,257 | |
| Scott County | D | 40,440 | 39,149 | 87,286 | |
| Shelby County | R | 1,662 | 4,362 | 6,448 | |
| Sioux County | R | 2,300 | 14,785 | 18,332 | |
| Story County | D | 25,709 | 19,458 | 50,974 | |
| Tama County | R | 3,196 | 4,971 | 8,866 | |
| Taylor County | R | 758 | 2,111 | 3,065 | |
| Union County | R | 1,922 | 3,525 | 5,885 | |
| Van Buren County | R | 845 | 2,527 | 3,595 | |
| Wapello County | R | 5,594 | 8,715 | 15,277 | |
| Warren County | R | 10,411 | 14,814 | 27,507 | |
| Washington County | R | 3,943 | 6,173 | 11,092 | |
| Wayne County | R | 719 | 2,069 | 2,989 | |
| Webster County | R | 6,305 | 10,056 | 17,593 | |
| Winnebago County | R | 1,931 | 3,447 | 5,864 | |
| Winneshiek County | R | 5,254 | 5,344 | 11,511 | |
| Woodbury County | R | 16,210 | 24,727 | 44,167 | |
| Worth County | R | 1,530 | 2,453 | 4,305 | |
| Wright County | R | 1,896 | 3,800 | 6,092 |
Same ballot, 2016IA
Source. MIT Election Data + Science Lab — 2016 presidential returns · official county-level results. Real returns — nothing estimated.