| | Population 25 Years and Over, 1990 | Persons with High School Diploma or Higher, 1990 | Persons with College Degree or Higher, 1990 | Percent Completed High School, 1990 | Percent Completed College, 1990 | High School Completion, Percent of U.S. Average, 1990 | College Completion, Percent of U.S. Average, 1990 |
|
| United States | 158,868,436 | 119,524,718 | 32,310,253 | 75.2% | 20.3% | 100.0% | 100.0% |
| Appalachian Region | 14,108,438 | 9,643,616 | 1,999,412 | 68.4% | 14.2% | 90.9% | 69.7% |
| Ohio | 6,924,764 | 5,239,876 | 1,175,336 | 75.7% | 17.0% | 100.6% | 83.5% |
| Appalachian Ohio | 1,260,504 | 892,525 | 132,599 | 70.8% | 10.5% | 94.1% | 51.7% |
|
| County |
| Adams | 15,569 | 9,090 | 812 | 58.4% | 5.2% | 77.6% | 25.6% |
| Ashtabula | 63,850 | 46,214 | 5,719 | 72.4% | 9.0% | 96.2% | 44.0% |
| Athens | 30,179 | 22,517 | 7,065 | 74.6% | 23.4% | 99.2% | 115.1% |
| Belmont | 48,645 | 35,191 | 4,391 | 72.3% | 9.0% | 96.2% | 44.4% |
| Brown | 21,769 | 14,130 | 1,614 | 64.9% | 7.4% | 86.3% | 36.5% |
| Carroll | 17,124 | 12,248 | 1,348 | 71.5% | 7.9% | 95.1% | 38.7% |
| Clermont | 91,613 | 66,679 | 13,266 | 72.8% | 14.5% | 96.7% | 71.2% |
| Columbiana | 70,249 | 50,439 | 5,998 | 71.8% | 8.5% | 95.4% | 42.0% |
| Coshocton | 22,878 | 16,319 | 1,863 | 71.3% | 8.1% | 94.8% | 40.0% |
| Gallia | 19,586 | 12,570 | 2,130 | 64.2% | 10.9% | 85.3% | 53.5% |
| Guernsey | 25,188 | 17,974 | 2,322 | 71.4% | 9.2% | 94.8% | 45.3% |
| Harrison | 10,726 | 7,482 | 750 | 69.8% | 7.0% | 92.7% | 34.4% |
| Highland | 22,784 | 15,147 | 1,876 | 66.5% | 8.2% | 88.4% | 40.5% |
| Hocking | 16,368 | 11,105 | 1,333 | 67.8% | 8.1% | 90.2% | 40.0% |
| Holmes | 17,780 | 8,341 | 1,170 | 46.9% | 6.6% | 62.4% | 32.4% |
| Jackson | 19,136 | 11,650 | 1,504 | 60.9% | 7.9% | 80.9% | 38.6% |
| Jefferson | 54,294 | 39,026 | 4,803 | 71.9% | 8.8% | 95.5% | 43.5% |
| Lawrence | 39,219 | 25,837 | 3,235 | 65.9% | 8.2% | 87.6% | 40.6% |
| Mahoning | 176,658 | 131,788 | 24,653 | 74.6% | 14.0% | 99.2% | 68.6% |
| Meigs | 14,772 | 9,458 | 1,074 | 64.0% | 7.3% | 85.1% | 35.7% |
| Monroe | 10,196 | 7,081 | 689 | 69.4% | 6.8% | 92.3% | 33.2% |
| Morgan | 8,980 | 6,428 | 662 | 71.6% | 7.4% | 95.1% | 36.2% |
| Muskingum | 51,692 | 36,774 | 5,199 | 71.1% | 10.1% | 94.6% | 49.5% |
| Noble | 7,235 | 5,054 | 403 | 69.9% | 5.6% | 92.8% | 27.4% |
| Perry | 19,411 | 13,307 | 1,130 | 68.6% | 5.8% | 91.1% | 28.6% |
| Pike | 15,099 | 9,176 | 1,201 | 60.8% | 8.0% | 80.8% | 39.1% |
| Ross | 45,531 | 30,770 | 4,207 | 67.6% | 9.2% | 89.8% | 45.4% |
| Scioto | 51,585 | 32,889 | 4,380 | 63.8% | 8.5% | 84.7% | 41.7% |
| Trumbull | 149,822 | 112,740 | 17,134 | 75.2% | 11.4% | 100.0% | 56.2% |
| Tuscarawas | 55,192 | 39,693 | 4,986 | 71.9% | 9.0% | 95.6% | 44.4% |
| Vinton | 6,963 | 4,087 | 336 | 58.7% | 4.8% | 78.0% | 23.7% |
| Washington | 40,411 | 31,321 | 5,346 | 77.5% | 13.2% | 103.0% | 65.0% |
