Iowa 2020 Presidential Election Results by County
In 2020, the Republican candidate won 93 of Iowa's 99 counties.
| County | Winner | Party | Votes | Vote Share | Margin | Total Votes Cast |
|---|---|---|---|---|---|---|
| Adair | Donald J Trump | Republican | 2,922 | 70.0% | 41.3 pts | 4,177 |
| Adams | Donald J Trump | Republican | 1,535 | 71.1% | 43.8 pts | 2,160 |
| Allamakee | Donald J Trump | Republican | 4,744 | 63.9% | 29.2 pts | 7,422 |
| Appanoose | Donald J Trump | Republican | 4,522 | 69.4% | 40.4 pts | 6,516 |
| Audubon | Donald J Trump | Republican | 2,299 | 67.2% | 35.9 pts | 3,420 |
| Benton | Donald J Trump | Republican | 9,208 | 62.9% | 27.6 pts | 14,642 |
| Black Hawk | Joseph R Biden Jr | Democratic | 35,647 | 53.5% | 8.8 pts | 66,593 |
| Boone | Donald J Trump | Republican | 8,729 | 56.9% | 15.8 pts | 15,340 |
| Bremer | Donald J Trump | Republican | 8,324 | 57.2% | 16.3 pts | 14,546 |
| Buchanan | Donald J Trump | Republican | 6,430 | 59.7% | 21.0 pts | 10,774 |
| Buena Vista | Donald J Trump | Republican | 5,074 | 62.1% | 25.9 pts | 8,167 |
| Butler | Donald J Trump | Republican | 5,556 | 68.6% | 38.7 pts | 8,098 |
| Calhoun | Donald J Trump | Republican | 3,698 | 70.3% | 42.4 pts | 5,258 |
| Carroll | Donald J Trump | Republican | 7,766 | 68.5% | 38.0 pts | 11,335 |
| Cass | Donald J Trump | Republican | 4,979 | 68.4% | 38.2 pts | 7,276 |
| Cedar | Donald J Trump | Republican | 6,184 | 57.8% | 17.3 pts | 10,703 |
| Cerro Gordo | Donald J Trump | Republican | 12,499 | 52.5% | 6.5 pts | 23,801 |
| Cherokee | Donald J Trump | Republican | 4,510 | 69.2% | 39.5 pts | 6,518 |
| Chickasaw | Donald J Trump | Republican | 4,322 | 65.2% | 31.5 pts | 6,631 |
| Clarke | Donald J Trump | Republican | 3,153 | 67.5% | 36.1 pts | 4,670 |
| Clay | Donald J Trump | Republican | 6,158 | 68.7% | 39.0 pts | 8,969 |
| Clayton | Donald J Trump | Republican | 6,119 | 63.8% | 29.0 pts | 9,594 |
| Clinton | Donald J Trump | Republican | 13,410 | 54.3% | 10.5 pts | 24,687 |
| Crawford | Donald J Trump | Republican | 4,862 | 68.0% | 36.9 pts | 7,154 |
| Dallas | Donald J Trump | Republican | 28,162 | 50.3% | 2.3 pts | 56,022 |
| Davis | Donald J Trump | Republican | 3,035 | 74.0% | 49.3 pts | 4,102 |
| Decatur | Donald J Trump | Republican | 2,618 | 68.8% | 39.4 pts | 3,804 |
| Delaware | Donald J Trump | Republican | 6,688 | 66.9% | 35.3 pts | 10,003 |
| Des Moines | Donald J Trump | Republican | 10,642 | 53.3% | 8.8 pts | 19,956 |
| Dickinson | Donald J Trump | Republican | 7,452 | 66.3% | 33.7 pts | 11,244 |
| Dubuque | Donald J Trump | Republican | 27,358 | 50.7% | 3.2 pts | 53,926 |
| Emmet | Donald J Trump | Republican | 3,268 | 67.3% | 36.0 pts | 4,853 |
| Fayette | Donald J Trump | Republican | 6,174 | 60.6% | 23.0 pts | 10,186 |
| Floyd | Donald J Trump | Republican | 4,747 | 59.1% | 19.6 pts | 8,032 |
| Franklin | Donald J Trump | Republican | 3,433 | 66.9% | 35.2 pts | 5,130 |
| Fremont | Donald J Trump | Republican | 2,717 | 70.4% | 42.4 pts | 3,857 |
| Greene | Donald J Trump | Republican | 3,229 | 63.9% | 28.9 pts | 5,057 |
| Grundy | Donald J Trump | Republican | 4,945 | 68.0% | 37.6 pts | 7,276 |
| Guthrie | Donald J Trump | Republican | 4,280 | 67.2% | 36.0 pts | 6,371 |
| Hamilton | Donald J Trump | Republican | 4,982 | 62.7% | 26.9 pts | 7,943 |
| Hancock | Donald J Trump | Republican | 4,401 | 71.3% | 44.0 pts | 6,172 |
| Hardin | Donald J Trump | Republican | 5,864 | 65.2% | 32.1 pts | 8,989 |
| Harrison | Donald J Trump | Republican | 5,580 | 68.4% | 38.5 pts | 8,155 |
| Henry | Donald J Trump | Republican | 6,525 | 65.4% | 32.6 pts | 9,982 |
| Howard | Donald J Trump | Republican | 3,133 | 63.2% | 27.5 pts | 4,958 |
| Humboldt | Donald J Trump | Republican | 3,825 | 71.8% | 44.7 pts | 5,327 |
| Ida | Donald J Trump | Republican | 2,885 | 75.0% | 51.1 pts | 3,849 |
| Iowa | Donald J Trump | Republican | 6,035 | 61.9% | 25.5 pts | 9,742 |
| Jackson | Donald J Trump | Republican | 6,957 | 62.5% | 26.3 pts | 11,135 |
| Jasper | Donald J Trump | Republican | 12,125 | 60.1% | 21.7 pts | 20,184 |
| Jefferson | Donald J Trump | Republican | 4,476 | 50.0% | 1.8 pts | 8,959 |
| Johnson | Joseph R Biden Jr | Democratic | 59,177 | 70.6% | 42.9 pts | 83,851 |
| Jones | Donald J Trump | Republican | 6,596 | 60.0% | 21.7 pts | 10,989 |
| Keokuk | Donald J Trump | Republican | 3,809 | 71.8% | 45.2 pts | 5,303 |
| Kossuth | Donald J Trump | Republican | 6,288 | 69.2% | 39.5 pts | 9,090 |
| Lee | Donald J Trump | Republican | 9,808 | 58.6% | 19.5 pts | 16,734 |
| Linn | Joseph R Biden Jr | Democratic | 70,874 | 55.6% | 13.4 pts | 127,458 |
| Louisa | Donald J Trump | Republican | 3,506 | 65.8% | 33.4 pts | 5,332 |
| Lucas | Donald J Trump | Republican | 3,295 | 71.2% | 43.4 pts | 4,630 |
| Lyon | Donald J Trump | Republican | 5,718 | 83.3% | 67.8 pts | 6,863 |
| Madison | Donald J Trump | Republican | 6,525 | 66.4% | 34.5 pts | 9,824 |
| Mahaska | Donald J Trump | Republican | 8,320 | 73.0% | 47.6 pts | 11,404 |
| Marion | Donald J Trump | Republican | 12,722 | 66.2% | 34.0 pts | 19,232 |
| Marshall | Donald J Trump | Republican | 9,610 | 53.0% | 7.9 pts | 18,136 |
| Mills | Donald J Trump | Republican | 5,616 | 67.9% | 37.6 pts | 8,268 |
| Mitchell | Donald J Trump | Republican | 3,684 | 63.3% | 28.0 pts | 5,822 |
| Monona | Donald J Trump | Republican | 3,262 | 69.0% | 39.2 pts | 4,728 |
| Monroe | Donald J Trump | Republican | 2,978 | 72.8% | 46.5 pts | 4,088 |
| Montgomery | Donald J Trump | Republican | 3,666 | 68.8% | 39.1 pts | 5,327 |
| Muscatine | Donald J Trump | Republican | 10,865 | 52.6% | 7.2 pts | 20,671 |
| O'Brien | Donald J Trump | Republican | 5,871 | 77.8% | 57.0 pts | 7,551 |
| Osceola | Donald J Trump | Republican | 2,695 | 81.0% | 62.9 pts | 3,328 |
| Page | Donald J Trump | Republican | 5,328 | 70.8% | 43.1 pts | 7,528 |
| Palo Alto | Donald J Trump | Republican | 3,378 | 68.1% | 37.5 pts | 4,958 |
| Plymouth | Donald J Trump | Republican | 10,515 | 74.1% | 49.5 pts | 14,188 |
| Pocahontas | Donald J Trump | Republican | 2,832 | 74.1% | 49.7 pts | 3,823 |
| Polk | Joseph R Biden Jr | Democratic | 146,250 | 56.5% | 15.0 pts | 258,755 |
| Pottawattamie | Donald J Trump | Republican | 26,352 | 57.6% | 17.0 pts | 45,744 |
| Poweshiek | Donald J Trump | Republican | 5,673 | 55.9% | 13.5 pts | 10,140 |
| Ringgold | Donald J Trump | Republican | 1,974 | 72.7% | 46.6 pts | 2,714 |
| Sac | Donald J Trump | Republican | 4,069 | 73.5% | 48.4 pts | 5,535 |
| Scott | Joseph R Biden Jr | Democratic | 46,926 | 50.7% | 3.2 pts | 92,599 |
| Shelby | Donald J Trump | Republican | 4,711 | 69.3% | 40.5 pts | 6,795 |
| Sioux | Donald J Trump | Republican | 15,775 | 82.8% | 67.0 pts | 19,051 |
| Story | Joseph R Biden Jr | Democratic | 29,175 | 57.2% | 16.9 pts | 51,038 |
| Tama | Donald J Trump | Republican | 5,325 | 58.9% | 19.3 pts | 9,048 |
| Taylor | Donald J Trump | Republican | 2,470 | 76.0% | 53.1 pts | 3,249 |
| Union | Donald J Trump | Republican | 4,024 | 65.1% | 31.7 pts | 6,185 |
| Van Buren | Donald J Trump | Republican | 2,870 | 75.7% | 52.6 pts | 3,791 |
| Wapello | Donald J Trump | Republican | 9,536 | 61.0% | 23.8 pts | 15,633 |
| Warren | Donald J Trump | Republican | 17,868 | 57.6% | 17.1 pts | 31,039 |
| Washington | Donald J Trump | Republican | 6,991 | 59.4% | 20.7 pts | 11,765 |
| Wayne | Donald J Trump | Republican | 2,344 | 75.4% | 52.0 pts | 3,109 |
| Webster | Donald J Trump | Republican | 10,970 | 61.6% | 24.4 pts | 17,822 |
| Winnebago | Donald J Trump | Republican | 3,726 | 62.4% | 26.6 pts | 5,970 |
| Winneshiek | Donald J Trump | Republican | 6,263 | 51.9% | 5.4 pts | 12,064 |
| Woodbury | Donald J Trump | Republican | 25,926 | 57.2% | 15.9 pts | 45,362 |
| Worth | Donald J Trump | Republican | 2,742 | 62.1% | 25.9 pts | 4,418 |
| Wright | Donald J Trump | Republican | 4,148 | 66.3% | 34.4 pts | 6,254 |
Other Cycles
Frequently Asked Questions
Which party won the most counties in Iowa in 2020?
The Republican candidate won 93 of Iowa's 99 counties in 2020, with 6 counties going to the other major party.
Which Iowa county had the closest presidential result in 2020?
Jefferson had the closest margin in Iowa in 2020, with Donald J Trump (Republican) winning by 1.8 points out of 8,959 total votes cast.
Which Iowa county had the widest presidential margin in 2020?
Lyon had the widest margin in Iowa in 2020, with Donald J Trump (Republican) winning by 67.8 points.
How many counties are included in Iowa's 2020 presidential results?
This page covers 99 counties in Iowa for the 2020 presidential election, based on MEDSL/EveryElectionResult.com county-level returns.