Iowa 2012 vs 2016: county swing
97 of 99 counties moved toward the Republican ticket; 32 changed hands.
| County | 2012 | 2016 | Swing | Votes 2012 | Votes 2016 |
|---|---|---|---|---|---|
| Howard County flipped | D+21.0 | R+20.5 | R+41.5 | 4,645 | 4,559 |
| Jackson County flipped | D+16.9 | R+19.3 | R+36.2 | 10,242 | 10,310 |
| Worth County flipped | D+14.5 | R+21.7 | R+36.2 | 4,172 | 4,257 |
| Adams County | R+3.7 | R+39.4 | R+35.7 | 2,185 | 2,106 |
| Wayne County | R+11.5 | R+45.9 | R+34.4 | 2,900 | 2,940 |
| Chickasaw County flipped | D+11.1 | R+23.0 | R+34.1 | 6,484 | 6,435 |
| Monroe County | R+7.7 | R+41.0 | R+33.3 | 3,830 | 3,865 |
| Appanoose County | R+3.3 | R+36.1 | R+32.8 | 6,245 | 6,136 |
| Ringgold County | R+7.0 | R+39.6 | R+32.6 | 2,599 | 2,707 |
| Wapello County flipped | D+11.8 | R+20.6 | R+32.4 | 15,770 | 15,149 |
| Lee County flipped | D+15.5 | R+16.0 | R+31.5 | 18,911 | 16,151 |
| Lucas County | R+6.1 | R+37.6 | R+31.5 | 4,323 | 4,354 |
| Fayette County flipped | D+12.0 | R+19.3 | R+31.3 | 10,366 | 9,975 |
| Monona County | R+9.6 | R+40.9 | R+31.3 | 4,742 | 4,572 |
| Union County flipped | D+3.9 | R+27.4 | R+31.3 | 5,957 | 5,832 |
| Fremont County | R+9.2 | R+40.2 | R+31.0 | 3,668 | 3,595 |
| Keokuk County | R+10.3 | R+41.1 | R+30.8 | 5,266 | 4,985 |
| Taylor County | R+14.1 | R+44.7 | R+30.6 | 2,995 | 3,029 |
| Crawford County | R+7.8 | R+37.9 | R+30.1 | 6,752 | 6,935 |
| Clayton County flipped | D+7.0 | R+22.7 | R+29.7 | 9,138 | 9,129 |
| Floyd County flipped | D+14.7 | R+14.9 | R+29.6 | 8,257 | 8,060 |
| Clarke County flipped | D+1.5 | R+28.0 | R+29.5 | 4,430 | 4,454 |
| Delaware County | R+0.2 | R+29.6 | R+29.4 | 9,378 | 9,241 |
| Louisa County flipped | D+0.7 | R+28.4 | R+29.1 | 4,968 | 5,008 |
| Buchanan County flipped | D+13.9 | R+15.0 | R+28.9 | 10,535 | 10,252 |
| Van Buren County | R+18.5 | R+47.3 | R+28.8 | 3,569 | 3,561 |
| Davis County | R+16.4 | R+44.9 | R+28.5 | 3,773 | 3,882 |
| Emmet County | R+8.7 | R+37.1 | R+28.4 | 4,687 | 4,753 |
| Allamakee County flipped | D+4.1 | R+24.1 | R+28.2 | 6,934 | 6,923 |
| Sac County | R+18.4 | R+46.6 | R+28.2 | 5,291 | 5,212 |
| Clinton County flipped | D+22.9 | R+5.1 | R+28.0 | 25,000 | 23,067 |
| Tama County flipped | D+7.5 | R+20.3 | R+27.8 | 9,017 | 8,752 |
| Calhoun County | R+12.5 | R+40.1 | R+27.6 | 5,230 | 5,159 |
| Mitchell County flipped | D+3.4 | R+24.0 | R+27.4 | 5,586 | 5,417 |
| Webster County flipped | D+5.8 | R+21.5 | R+27.3 | 18,292 | 17,430 |
| Hancock County | R+13.5 | R+40.7 | R+27.2 | 5,925 | 5,871 |
| Adair County | R+8.1 | R+34.9 | R+26.8 | 3,996 | 3,811 |
| Jones County flipped | D+7.8 | R+19.0 | R+26.8 | 10,449 | 10,133 |
| Butler County | R+10.3 | R+36.8 | R+26.5 | 7,545 | 7,513 |
| Winnebago County | Even | R+26.2 | R+26.2 | 5,918 | 5,787 |
| Audubon County | R+5.5 | R+30.9 | R+25.4 | 3,457 | 3,412 |
| Carroll County | R+6.2 | R+31.6 | R+25.4 | 10,674 | 10,544 |
| Des Moines County flipped | D+18.4 | R+6.9 | R+25.3 | 20,385 | 19,103 |
| Ida County | R+26.3 | R+51.6 | R+25.3 | 3,663 | 3,612 |
| Jasper County flipped | D+7.1 | R+18.2 | R+25.3 | 19,515 | 19,034 |
| Decatur County | R+4.1 | R+29.3 | R+25.2 | 3,833 | 3,734 |
| Palo Alto County | R+10.6 | R+35.8 | R+25.2 | 4,887 | 4,703 |
| Benton County | R+0.6 | R+25.7 | R+25.1 | 14,023 | 13,844 |
| Mahaska County | R+20.5 | R+45.3 | R+24.8 | 10,883 | 10,632 |
| Henry County | R+5.9 | R+30.6 | R+24.7 | 9,697 | 9,404 |
| Harrison County | R+12.7 | R+37.2 | R+24.5 | 7,322 | 7,465 |
| Cherokee County | R+16.0 | R+40.2 | R+24.2 | 6,415 | 6,258 |
| Kossuth County | R+12.2 | R+36.2 | R+24.0 | 8,923 | 8,607 |
| Clay County | R+18.4 | R+42.1 | R+23.7 | 8,502 | 8,617 |
| Humboldt County | R+21.9 | R+45.5 | R+23.6 | 5,158 | 5,087 |
| Wright County | R+8.1 | R+31.6 | R+23.5 | 6,278 | 6,026 |
| Pocahontas County | R+21.6 | R+45.0 | R+23.4 | 4,032 | 3,865 |
| Greene County | R+0.1 | R+23.4 | R+23.3 | 4,846 | 4,821 |
| Franklin County | R+10.7 | R+33.6 | R+22.9 | 5,186 | 4,968 |
| Guthrie County | R+10.3 | R+33.0 | R+22.7 | 5,888 | 5,750 |
| Cedar County flipped | D+4.6 | R+17.8 | R+22.4 | 9,649 | 9,541 |
| Hardin County | R+6.7 | R+28.9 | R+22.2 | 8,898 | 8,533 |
| Muscatine County flipped | D+15.9 | R+6.2 | R+22.1 | 19,865 | 19,434 |
| Cerro Gordo County flipped | D+13.4 | R+7.7 | R+21.1 | 23,824 | 22,965 |
| Cass County | R+18.8 | R+39.4 | R+20.6 | 7,205 | 7,125 |
| Montgomery County | R+21.5 | R+42.0 | R+20.5 | 5,025 | 5,044 |
| Woodbury County flipped | D+1.0 | R+19.5 | R+20.5 | 45,019 | 43,718 |
| Osceola County | R+41.2 | R+61.6 | R+20.4 | 3,194 | 3,213 |
| Boone County flipped | D+6.6 | R+13.7 | R+20.3 | 14,388 | 14,196 |
| Shelby County | R+22.2 | R+42.4 | R+20.2 | 6,483 | 6,370 |
| Hamilton County | R+2.6 | R+22.6 | R+20.0 | 7,927 | 7,694 |
| Mills County | R+19.0 | R+38.7 | R+19.7 | 7,212 | 7,698 |
| Page County | R+24.5 | R+43.8 | R+19.3 | 7,079 | 7,044 |
| Madison County | R+11.9 | R+31.1 | R+19.2 | 8,458 | 8,636 |
| Iowa County | R+4.8 | R+23.9 | R+19.1 | 8,866 | 8,904 |
| Dickinson County | R+17.9 | R+35.7 | R+17.8 | 10,159 | 10,354 |
| Marshall County flipped | D+9.4 | R+8.3 | R+17.7 | 19,064 | 17,980 |
| Marion County | R+13.2 | R+30.7 | R+17.5 | 17,687 | 17,816 |
| Plymouth County | R+34.2 | R+51.5 | R+17.3 | 12,950 | 13,190 |
| Jefferson County flipped | D+15.9 | R+0.5 | R+16.4 | 8,530 | 8,156 |
| Washington County | R+4.0 | R+20.4 | R+16.4 | 11,004 | 10,929 |
| Bremer County flipped | D+2.7 | R+13.6 | R+16.3 | 13,346 | 13,538 |
| Grundy County | R+22.7 | R+38.9 | R+16.2 | 6,962 | 6,872 |
| Pottawattamie County | R+5.3 | R+21.3 | R+16.0 | 42,301 | 42,680 |
| Dubuque County flipped | D+14.7 | R+1.2 | R+15.9 | 50,894 | 49,721 |
| Poweshiek County flipped | D+9.3 | R+6.5 | R+15.8 | 9,975 | 9,833 |
| Winneshiek County flipped | D+14.7 | R+0.8 | R+15.5 | 11,084 | 11,362 |
| O'Brien County | R+44.9 | R+59.9 | R+15.0 | 7,341 | 7,406 |
| Buena Vista County | R+10.2 | R+24.7 | R+14.5 | 8,383 | 8,278 |
| Warren County | R+2.0 | R+16.2 | R+14.2 | 26,072 | 27,300 |
| Black Hawk County | D+20.2 | D+7.3 | R+12.9 | 67,141 | 64,405 |
| Lyon County | R+54.6 | R+67.0 | R+12.4 | 6,509 | 6,377 |
| Scott County | D+13.7 | D+1.5 | R+12.2 | 90,263 | 86,220 |
| Linn County | D+17.7 | D+9.0 | R+8.7 | 118,453 | 117,098 |
| Polk County | D+14.1 | D+11.3 | R+2.8 | 228,882 | 231,555 |
| Story County | D+13.9 | D+12.3 | R+1.6 | 47,150 | 50,667 |
| Sioux County | R+67.6 | R+68.7 | R+1.1 | 17,308 | 18,194 |
| Dallas County | R+11.6 | R+9.6 | D+2.0 | 38,116 | 38,252 |
| Johnson County | D+35.5 | D+37.8 | D+2.3 | 75,977 | 76,940 |
Official results As published by The American Presidency Project (UC Santa Barbara) and the state documents it links. How we use this data