Iowa 2016 Presidential Election Results by County
In 2016, the Republican candidate won 93 of Iowa's 99 counties.
| County | Winner | Party | Votes | Vote Share | Margin | Total Votes Cast |
|---|---|---|---|---|---|---|
| Adair | Donald Trump | Republican | 2,461 | 64.6% | 34.8 pts | 3,811 |
| Adams | Donald Trump | Republican | 1,395 | 66.2% | 39.4 pts | 2,106 |
| Allamakee | Donald Trump | Republican | 4,093 | 59.1% | 24.2 pts | 6,923 |
| Appanoose | Donald Trump | Republican | 4,033 | 65.7% | 36.2 pts | 6,136 |
| Audubon | Donald Trump | Republican | 2,136 | 62.6% | 30.9 pts | 3,412 |
| Benton | Donald Trump | Republican | 8,232 | 59.5% | 25.7 pts | 13,844 |
| Black Hawk | Hillary Clinton | Democratic | 32,233 | 50.0% | 7.4 pts | 64,405 |
| Boone | Donald Trump | Republican | 7,484 | 52.7% | 13.7 pts | 14,196 |
| Bremer | Donald Trump | Republican | 7,208 | 53.2% | 13.7 pts | 13,538 |
| Buchanan | Donald Trump | Republican | 5,510 | 53.7% | 15.0 pts | 10,252 |
| Buena Vista | Donald Trump | Republican | 4,903 | 59.2% | 24.7 pts | 8,278 |
| Butler | Donald Trump | Republican | 4,921 | 65.5% | 36.8 pts | 7,513 |
| Calhoun | Donald Trump | Republican | 3,468 | 67.2% | 40.1 pts | 5,159 |
| Carroll | Donald Trump | Republican | 6,638 | 63.0% | 31.6 pts | 10,544 |
| Cass | Donald Trump | Republican | 4,761 | 66.8% | 39.4 pts | 7,125 |
| Cedar | Donald Trump | Republican | 5,295 | 55.5% | 17.8 pts | 9,541 |
| Cerro Gordo | Donald Trump | Republican | 11,621 | 50.6% | 7.7 pts | 22,965 |
| Cherokee | Donald Trump | Republican | 4,192 | 67.0% | 40.2 pts | 6,258 |
| Chickasaw | Donald Trump | Republican | 3,742 | 58.2% | 22.9 pts | 6,435 |
| Clarke | Donald Trump | Republican | 2,713 | 60.9% | 28.0 pts | 4,454 |
| Clay | Donald Trump | Republican | 5,877 | 68.2% | 42.1 pts | 8,617 |
| Clayton | Donald Trump | Republican | 5,317 | 58.2% | 22.8 pts | 9,129 |
| Clinton | Donald Trump | Republican | 11,276 | 48.9% | 5.1 pts | 23,067 |
| Crawford | Donald Trump | Republican | 4,617 | 66.6% | 37.9 pts | 6,935 |
| Dallas | Donald Trump | Republican | 19,339 | 50.6% | 9.5 pts | 38,252 |
| Davis | Donald Trump | Republican | 2,723 | 70.1% | 45.0 pts | 3,882 |
| Decatur | Donald Trump | Republican | 2,296 | 61.5% | 29.3 pts | 3,734 |
| Delaware | Donald Trump | Republican | 5,694 | 61.6% | 29.6 pts | 9,241 |
| Des Moines | Donald Trump | Republican | 9,529 | 49.9% | 6.9 pts | 19,103 |
| Dickinson | Donald Trump | Republican | 6,753 | 65.2% | 35.7 pts | 10,354 |
| Dubuque | Donald Trump | Republican | 23,460 | 47.2% | 1.2 pts | 49,721 |
| Emmet | Donald Trump | Republican | 3,124 | 65.7% | 37.2 pts | 4,753 |
| Fayette | Donald Trump | Republican | 5,620 | 56.3% | 19.4 pts | 9,975 |
| Floyd | Donald Trump | Republican | 4,375 | 54.3% | 14.8 pts | 8,060 |
| Franklin | Donald Trump | Republican | 3,163 | 63.7% | 33.6 pts | 4,968 |
| Fremont | Donald Trump | Republican | 2,407 | 67.0% | 40.2 pts | 3,595 |
| Greene | Donald Trump | Republican | 2,820 | 58.5% | 23.4 pts | 4,821 |
| Grundy | Donald Trump | Republican | 4,527 | 65.9% | 38.9 pts | 6,872 |
| Guthrie | Donald Trump | Republican | 3,628 | 63.1% | 33.0 pts | 5,750 |
| Hamilton | Donald Trump | Republican | 4,463 | 58.0% | 22.6 pts | 7,694 |
| Hancock | Donald Trump | Republican | 3,977 | 67.7% | 40.7 pts | 5,871 |
| Hardin | Donald Trump | Republican | 5,254 | 61.6% | 28.9 pts | 8,533 |
| Harrison | Donald Trump | Republican | 4,902 | 65.7% | 37.1 pts | 7,465 |
| Henry | Donald Trump | Republican | 5,779 | 61.5% | 30.6 pts | 9,404 |
| Howard | Donald Trump | Republican | 2,611 | 57.3% | 20.5 pts | 4,559 |
| Humboldt | Donald Trump | Republican | 3,568 | 70.1% | 45.5 pts | 5,087 |
| Ida | Donald Trump | Republican | 2,655 | 73.5% | 51.6 pts | 3,612 |
| Iowa | Donald Trump | Republican | 5,205 | 58.5% | 23.8 pts | 8,904 |
| Jackson | Donald Trump | Republican | 5,824 | 56.5% | 19.3 pts | 10,310 |
| Jasper | Donald Trump | Republican | 10,560 | 55.5% | 18.1 pts | 19,034 |
| Jefferson | Donald Trump | Republican | 3,748 | 46.0% | 0.5 pts | 8,156 |
| Johnson | Hillary Clinton | Democratic | 50,200 | 65.2% | 37.9 pts | 76,940 |
| Jones | Donald Trump | Republican | 5,720 | 56.4% | 19.1 pts | 10,133 |
| Keokuk | Donald Trump | Republican | 3,390 | 68.0% | 41.1 pts | 4,985 |
| Kossuth | Donald Trump | Republican | 5,653 | 65.7% | 36.1 pts | 8,607 |
| Lee | Donald Trump | Republican | 8,803 | 54.5% | 16.0 pts | 16,151 |
| Linn | Hillary Clinton | Democratic | 58,935 | 50.3% | 9.0 pts | 117,098 |
| Louisa | Donald Trump | Republican | 3,069 | 61.3% | 28.4 pts | 5,008 |
| Lucas | Donald Trump | Republican | 2,877 | 66.1% | 37.6 pts | 4,354 |
| Lyon | Donald Trump | Republican | 5,192 | 81.4% | 67.0 pts | 6,377 |
| Madison | Donald Trump | Republican | 5,360 | 62.1% | 31.1 pts | 8,636 |
| Mahaska | Donald Trump | Republican | 7,432 | 69.9% | 45.3 pts | 10,632 |
| Marion | Donald Trump | Republican | 10,962 | 61.5% | 30.8 pts | 17,816 |
| Marshall | Donald Trump | Republican | 9,146 | 50.9% | 8.3 pts | 17,980 |
| Mills | Donald Trump | Republican | 5,067 | 65.8% | 38.7 pts | 7,698 |
| Mitchell | Donald Trump | Republican | 3,190 | 58.9% | 24.0 pts | 5,417 |
| Monona | Donald Trump | Republican | 3,120 | 68.2% | 41.0 pts | 4,572 |
| Monroe | Donald Trump | Republican | 2,638 | 68.3% | 40.9 pts | 3,865 |
| Montgomery | Donald Trump | Republican | 3,436 | 68.1% | 42.1 pts | 5,044 |
| Muscatine | Donald Trump | Republican | 9,584 | 49.3% | 6.3 pts | 19,434 |
| O'Brien | Donald Trump | Republican | 5,752 | 77.7% | 59.9 pts | 7,406 |
| Osceola | Donald Trump | Republican | 2,531 | 78.8% | 61.6 pts | 3,213 |
| Page | Donald Trump | Republican | 4,893 | 69.5% | 43.8 pts | 7,044 |
| Palo Alto | Donald Trump | Republican | 3,081 | 65.5% | 35.8 pts | 4,703 |
| Plymouth | Donald Trump | Republican | 9,680 | 73.4% | 51.5 pts | 13,190 |
| Pocahontas | Donald Trump | Republican | 2,702 | 69.9% | 45.0 pts | 3,865 |
| Polk | Hillary Clinton | Democratic | 119,804 | 51.7% | 11.4 pts | 231,555 |
| Pottawattamie | Donald Trump | Republican | 24,447 | 57.3% | 21.3 pts | 42,680 |
| Poweshiek | Donald Trump | Republican | 4,946 | 50.3% | 6.5 pts | 9,833 |
| Ringgold | Donald Trump | Republican | 1,824 | 67.4% | 39.6 pts | 2,707 |
| Sac | Donald Trump | Republican | 3,703 | 71.0% | 46.7 pts | 5,212 |
| Scott | Hillary Clinton | Democratic | 40,440 | 46.9% | 1.5 pts | 86,220 |
| Shelby | Donald Trump | Republican | 4,362 | 68.5% | 42.4 pts | 6,370 |
| Sioux | Donald Trump | Republican | 14,785 | 81.3% | 68.6 pts | 18,194 |
| Story | Hillary Clinton | Democratic | 25,709 | 50.7% | 12.3 pts | 50,667 |
| Tama | Donald Trump | Republican | 4,971 | 56.8% | 20.3 pts | 8,752 |
| Taylor | Donald Trump | Republican | 2,111 | 69.7% | 44.7 pts | 3,029 |
| Union | Donald Trump | Republican | 3,525 | 60.4% | 27.5 pts | 5,832 |
| Van Buren | Donald Trump | Republican | 2,527 | 71.0% | 47.2 pts | 3,561 |
| Wapello | Donald Trump | Republican | 8,715 | 57.5% | 20.6 pts | 15,149 |
| Warren | Donald Trump | Republican | 14,814 | 54.3% | 16.1 pts | 27,300 |
| Washington | Donald Trump | Republican | 6,173 | 56.5% | 20.4 pts | 10,929 |
| Wayne | Donald Trump | Republican | 2,069 | 70.4% | 45.9 pts | 2,940 |
| Webster | Donald Trump | Republican | 10,056 | 57.7% | 21.5 pts | 17,430 |
| Winnebago | Donald Trump | Republican | 3,447 | 59.6% | 26.2 pts | 5,787 |
| Winneshiek | Donald Trump | Republican | 5,344 | 47.0% | 0.8 pts | 11,362 |
| Woodbury | Donald Trump | Republican | 24,727 | 56.6% | 19.5 pts | 43,718 |
| Worth | Donald Trump | Republican | 2,453 | 57.6% | 21.7 pts | 4,257 |
| Wright | Donald Trump | Republican | 3,800 | 63.1% | 31.6 pts | 6,026 |
Other Cycles
Frequently Asked Questions
Which party won the most counties in Iowa in 2016?
The Republican candidate won 93 of Iowa's 99 counties in 2016, with 6 counties going to the other major party.
Which Iowa county had the closest presidential result in 2016?
Jefferson had the closest margin in Iowa in 2016, with Donald Trump (Republican) winning by 0.5 points out of 8,156 total votes cast.
Which Iowa county had the widest presidential margin in 2016?
Sioux had the widest margin in Iowa in 2016, with Donald Trump (Republican) winning by 68.6 points.
How many counties are included in Iowa's 2016 presidential results?
This page covers 99 counties in Iowa for the 2016 presidential election, based on MEDSL/EveryElectionResult.com county-level returns.