| County | State | % Correct |
|---|---|---|
| Orange | California | 95%
|
| Orange | Florida | 95%
|
| Orange | Indiana | 95%
|
| Orange | New York | 95%
|
| Orange | North Carolina | 95%
|
| Orange | Texas | 95%
|
| Orange | Vermont | 95%
|
| Orange | Virginia | 95%
|
| Ohio | Indiana | 73%
|
| Ohio | Kentucky | 73%
|
| Ohio | West Virginia | 73%
|
| Oklahoma | Oklahoma | 73%
|
| Oneida | Idaho | 64%
|
| Oneida | New York | 64%
|
| Oneida | Wisconsin | 64%
|
| Oregon | Missouri | 59%
|
| Oakland | Michigan | 55%
|
| Ontario | New York | 55%
|
| Oxford | Maine | 55%
|
| Ottawa | Kansas | 50%
|
| Ottawa | Michigan | 50%
|
| Ottawa | Ohio | 50%
|
| Ottawa | Oklahoma | 50%
|
| Owen | Indiana | 50%
|
| Owen | Kentucky | 50%
|
| Ocean | New Jersey | 45%
|
| Okeechobee | Florida | 45%
|
| Orleans | Louisiana | 45%
|
| Orleans | New York | 45%
|
| Orleans | Vermont | 45%
|
| Onondaga | New York | 41%
|
| Oswego | New York | 41%
|
| Ogle | Illinois | 36%
|
| Oldham | Kentucky | 36%
|
| Oldham | Texas | 36%
|
| Osceola | Florida | 36%
|
| Osceola | Iowa | 36%
|
| Osceola | Michigan | 36%
|
| Ozark | Missouri | 36%
|
| Oglethorpe | Georgia | 32%
|
| Okaloosa | Florida | 32%
|
| Oliver | North Dakota | 32%
|
| Orangeburg | South Carolina | 32%
|
| Osage | Kansas | 32%
|
| Osage | Missouri | 32%
|
| Osage | Oklahoma | 32%
|
| Otsego | Michigan | 32%
|
| Otsego | New York | 32%
|
| Obion | Tennessee | 27%
|
| Oceana | Michigan | 27%
|
| Oconto | Wisconsin | 27%
|
| Ogemaw | Michigan | 27%
|
| Okmulgee | Oklahoma | 27%
|
| Onslow | North Carolina | 27%
|
| Ontonagon | Michigan | 27%
|
| Oscoda | Michigan | 27%
|
| Ouachita | Arkansas | 27%
|
| Ouachita | Louisiana | 27%
|
| Ouray | Colorado | 27%
|
| Outagamie | Wisconsin | 27%
|
| Owsley | Kentucky | 27%
|
| Oconee | Georgia | 23%
|
| Oconee | South Carolina | 23%
|
| Okanogan | Washington | 23%
|
| Okfuskee | Oklahoma | 23%
|
| Olmsted | Minnesota | 23%
|
| Otter Tail | Minnesota | 23%
|
| Overton | Tennessee | 23%
|
| Owyhee | Idaho | 23%
|
| O'Brien | Iowa | 18%
|
| Ochiltree | Texas | 18%
|
| Oktibbeha | Mississippi | 18%
|
| Otero | Colorado | 18%
|
| Otero | New Mexico | 18%
|
| Otoe | Nebraska | 18%
|
| Ozaukee | Wisconsin | 18%
|
| Osborne | Kansas | 14%
|
| Oglala Lakota | South Dakota | 9%
|