Iowa 2008 Presidential Election Results by County
In 2008, the Democratic candidate won 53 of Iowa's 99 counties.
| County | Winner | Party | Votes | Vote Share | Margin | Total Votes Cast |
|---|---|---|---|---|---|---|
| Adair | John McCain | Republican | 2,060 | 50.8% | 3.4 pts | 4,053 |
| Adams | Barack Obama | Democratic | 1,118 | 50.7% | 3.3 pts | 2,206 |
| Allamakee | Barack Obama | Democratic | 3,971 | 56.3% | 14.3 pts | 7,059 |
| Appanoose | John McCain | Republican | 3,086 | 50.0% | 1.9 pts | 6,176 |
| Audubon | Barack Obama | Democratic | 1,739 | 50.6% | 3.1 pts | 3,435 |
| Benton | Barack Obama | Democratic | 7,058 | 51.5% | 4.5 pts | 13,712 |
| Black Hawk | Barack Obama | Democratic | 39,184 | 60.5% | 22.4 pts | 64,775 |
| Boone | Barack Obama | Democratic | 7,356 | 52.8% | 7.6 pts | 13,929 |
| Bremer | Barack Obama | Democratic | 6,940 | 53.9% | 9.3 pts | 12,871 |
| Buchanan | Barack Obama | Democratic | 6,050 | 58.5% | 18.5 pts | 10,338 |
| Buena Vista | John McCain | Republican | 4,223 | 50.2% | 1.8 pts | 8,418 |
| Butler | John McCain | Republican | 3,700 | 51.6% | 4.7 pts | 7,166 |
| Calhoun | John McCain | Republican | 2,741 | 52.8% | 7.7 pts | 5,195 |
| Carroll | Barack Obama | Democratic | 5,302 | 51.0% | 3.7 pts | 10,387 |
| Cass | John McCain | Republican | 4,006 | 54.5% | 10.8 pts | 7,350 |
| Cedar | Barack Obama | Democratic | 5,221 | 54.0% | 9.6 pts | 9,665 |
| Cerro Gordo | Barack Obama | Democratic | 14,405 | 59.7% | 20.8 pts | 24,140 |
| Cherokee | John McCain | Republican | 3,372 | 53.0% | 7.6 pts | 6,365 |
| Chickasaw | Barack Obama | Democratic | 3,923 | 59.6% | 20.8 pts | 6,583 |
| Clarke | Barack Obama | Democratic | 2,218 | 49.9% | 2.3 pts | 4,443 |
| Clay | John McCain | Republican | 4,355 | 51.9% | 5.1 pts | 8,398 |
| Clayton | Barack Obama | Democratic | 5,195 | 57.8% | 17.2 pts | 8,989 |
| Clinton | Barack Obama | Democratic | 15,018 | 60.8% | 23.0 pts | 24,719 |
| Crawford | Barack Obama | Democratic | 3,715 | 51.7% | 5.1 pts | 7,191 |
| Dallas | John McCain | Republican | 16,954 | 51.9% | 5.5 pts | 32,640 |
| Davis | John McCain | Republican | 2,029 | 53.2% | 9.1 pts | 3,815 |
| Decatur | John McCain | Republican | 2,020 | 49.2% | 0.8 pts | 4,102 |
| Delaware | Barack Obama | Democratic | 4,649 | 52.2% | 6.0 pts | 8,901 |
| Des Moines | Barack Obama | Democratic | 12,462 | 60.6% | 23.0 pts | 20,570 |
| Dickinson | John McCain | Republican | 5,162 | 52.1% | 5.4 pts | 9,906 |
| Dubuque | Barack Obama | Democratic | 28,611 | 59.7% | 20.8 pts | 47,953 |
| Emmet | Barack Obama | Democratic | 2,570 | 51.2% | 3.9 pts | 5,015 |
| Fayette | Barack Obama | Democratic | 5,908 | 57.6% | 16.6 pts | 10,259 |
| Floyd | Barack Obama | Democratic | 4,822 | 59.6% | 21.9 pts | 8,091 |
| Franklin | Barack Obama | Democratic | 2,575 | 50.0% | 1.4 pts | 5,148 |
| Fremont | John McCain | Republican | 1,989 | 51.1% | 3.6 pts | 3,894 |
| Greene | Barack Obama | Democratic | 2,371 | 49.4% | 0.5 pts | 4,804 |
| Grundy | John McCain | Republican | 3,945 | 57.8% | 16.9 pts | 6,828 |
| Guthrie | John McCain | Republican | 3,074 | 52.6% | 7.7 pts | 5,847 |
| Hamilton | Barack Obama | Democratic | 4,018 | 49.7% | 1.3 pts | 8,078 |
| Hancock | John McCain | Republican | 3,016 | 50.9% | 3.6 pts | 5,930 |
| Hardin | Barack Obama | Democratic | 4,393 | 49.6% | 0.9 pts | 8,859 |
| Harrison | John McCain | Republican | 3,909 | 51.6% | 4.7 pts | 7,578 |
| Henry | John McCain | Republican | 4,822 | 51.4% | 5.0 pts | 9,377 |
| Howard | Barack Obama | Democratic | 2,941 | 62.2% | 25.8 pts | 4,728 |
| Humboldt | John McCain | Republican | 2,895 | 56.5% | 14.3 pts | 5,122 |
| Ida | John McCain | Republican | 2,036 | 57.4% | 16.4 pts | 3,547 |
| Iowa | Barack Obama | Democratic | 4,202 | 49.2% | 0.2 pts | 8,546 |
| Jackson | Barack Obama | Democratic | 6,102 | 61.3% | 24.4 pts | 9,955 |
| Jasper | Barack Obama | Democratic | 10,250 | 52.8% | 7.5 pts | 19,421 |
| Jefferson | Barack Obama | Democratic | 5,070 | 58.7% | 20.2 pts | 8,631 |
| Johnson | Barack Obama | Democratic | 51,027 | 69.9% | 41.5 pts | 72,975 |
| Jones | Barack Obama | Democratic | 5,446 | 54.4% | 10.4 pts | 10,004 |
| Keokuk | John McCain | Republican | 2,712 | 50.6% | 3.6 pts | 5,361 |
| Kossuth | Barack Obama | Democratic | 4,625 | 50.8% | 3.3 pts | 9,097 |
| Lee | Barack Obama | Democratic | 9,821 | 57.0% | 16.0 pts | 17,224 |
| Linn | Barack Obama | Democratic | 68,037 | 60.0% | 21.5 pts | 113,355 |
| Louisa | Barack Obama | Democratic | 2,523 | 51.3% | 4.2 pts | 4,920 |
| Lucas | John McCain | Republican | 2,330 | 52.1% | 6.7 pts | 4,471 |
| Lyon | John McCain | Republican | 4,471 | 71.9% | 45.0 pts | 6,217 |
| Madison | John McCain | Republican | 4,579 | 54.0% | 10.0 pts | 8,480 |
| Mahaska | John McCain | Republican | 6,271 | 57.4% | 16.5 pts | 10,932 |
| Marion | John McCain | Republican | 9,256 | 54.4% | 10.8 pts | 17,030 |
| Marshall | Barack Obama | Democratic | 10,023 | 53.7% | 9.4 pts | 18,657 |
| Mills | John McCain | Republican | 4,183 | 57.4% | 16.6 pts | 7,282 |
| Mitchell | Barack Obama | Democratic | 3,179 | 55.1% | 12.3 pts | 5,766 |
| Monona | John McCain | Republican | 2,411 | 50.3% | 2.4 pts | 4,796 |
| Monroe | John McCain | Republican | 2,000 | 51.6% | 5.2 pts | 3,873 |
| Montgomery | John McCain | Republican | 2,887 | 54.6% | 10.6 pts | 5,287 |
| Muscatine | Barack Obama | Democratic | 10,920 | 57.1% | 15.6 pts | 19,119 |
| O'Brien | John McCain | Republican | 4,894 | 66.7% | 34.9 pts | 7,333 |
| Osceola | John McCain | Republican | 2,027 | 64.8% | 31.7 pts | 3,127 |
| Page | John McCain | Republican | 4,351 | 59.1% | 19.7 pts | 7,356 |
| Palo Alto | Barack Obama | Democratic | 2,428 | 50.5% | 2.8 pts | 4,806 |
| Plymouth | John McCain | Republican | 7,765 | 62.1% | 25.1 pts | 12,512 |
| Pocahontas | John McCain | Republican | 2,138 | 53.3% | 8.4 pts | 4,011 |
| Polk | Barack Obama | Democratic | 120,984 | 56.4% | 14.6 pts | 214,386 |
| Pottawattamie | John McCain | Republican | 21,237 | 50.2% | 1.9 pts | 42,320 |
| Poweshiek | Barack Obama | Democratic | 5,519 | 55.0% | 11.8 pts | 10,031 |
| Ringgold | John McCain | Republican | 1,401 | 52.1% | 6.1 pts | 2,689 |
| Sac | John McCain | Republican | 2,705 | 53.5% | 8.9 pts | 5,053 |
| Scott | Barack Obama | Democratic | 48,927 | 56.6% | 14.5 pts | 86,371 |
| Shelby | John McCain | Republican | 3,488 | 54.1% | 9.7 pts | 6,453 |
| Sioux | John McCain | Republican | 13,490 | 81.0% | 62.8 pts | 16,664 |
| Story | Barack Obama | Democratic | 26,548 | 57.0% | 16.2 pts | 46,575 |
| Tama | Barack Obama | Democratic | 4,899 | 55.4% | 12.2 pts | 8,850 |
| Taylor | John McCain | Republican | 1,607 | 53.1% | 8.6 pts | 3,026 |
| Union | Barack Obama | Democratic | 3,000 | 50.8% | 3.7 pts | 5,909 |
| Van Buren | John McCain | Republican | 1,986 | 55.0% | 12.2 pts | 3,608 |
| Wapello | Barack Obama | Democratic | 8,820 | 55.4% | 13.5 pts | 15,931 |
| Warren | Barack Obama | Democratic | 12,299 | 49.4% | 0.6 pts | 24,880 |
| Washington | John McCain | Republican | 5,247 | 49.4% | 0.7 pts | 10,626 |
| Wayne | John McCain | Republican | 1,565 | 52.5% | 7.0 pts | 2,980 |
| Webster | Barack Obama | Democratic | 9,917 | 53.4% | 8.5 pts | 18,554 |
| Winnebago | Barack Obama | Democratic | 3,254 | 53.5% | 8.6 pts | 6,082 |
| Winneshiek | Barack Obama | Democratic | 6,829 | 60.5% | 22.7 pts | 11,280 |
| Woodbury | John McCain | Republican | 22,219 | 49.6% | 0.5 pts | 44,801 |
| Worth | Barack Obama | Democratic | 2,567 | 60.3% | 22.4 pts | 4,257 |
| Wright | John McCain | Republican | 3,198 | 50.0% | 1.5 pts | 6,395 |
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Frequently Asked Questions
Which party won the most counties in Iowa in 2008?
The Democratic candidate won 53 of Iowa's 99 counties in 2008, with 46 counties going to the other major party.
Which Iowa county had the closest presidential result in 2008?
Iowa had the closest margin in Iowa in 2008, with Barack Obama (Democratic) winning by 0.2 points out of 8,546 total votes cast.
Which Iowa county had the widest presidential margin in 2008?
Sioux had the widest margin in Iowa in 2008, with John McCain (Republican) winning by 62.8 points.
How many counties are included in Iowa's 2008 presidential results?
This page covers 99 counties in Iowa for the 2008 presidential election, based on MEDSL/EveryElectionResult.com county-level returns.