

A focus on "some college, no degree" can improve state college attainment rates. More: Idaho PDF
| County | Percent w/college degree | Number w/college degree | Total population (ages 25-34) | < 9th grade | 9th-12th grade, no diploma | High school grad/GED | Some college, no degree | Associate's degree | Bachelor's degree | Graduate degree |
| TOTAL | 30.4% | 51,299 | 168,703 | 7,235 | 15,772 | 44,813 | 49,584 | 14,150 | 29,665 | 7,484 |
| Latah | 54.8% | 2,809 | 5,130 | 106 | 181 | 802 | 1,232 | 517 | 1,625 | 667 |
| Blaine | 46.7% | 1,270 | 2,717 | 154 | 206 | 435 | 652 | 132 | 951 | 187 |
| Madison | 40.7% | 843 | 2,071 | 103 | 108 | 446 | 571 | 430 | 275 | 138 |
| Ada | 40.1% | 19,163 | 47,796 | 530 | 3,367 | 10,245 | 14,491 | 3,573 | 12,377 | 3,213 |
| Camas | 37.2% | 35 | 94 | 0 | 10 | 22 | 27 | 11 | 22 | 2 |
| Bannock | 36.2% | 3,717 | 10,265 | 191 | 740 | 2,232 | 3,385 | 1,045 | 2,198 | 474 |
| Custer | 32.7% | 135 | 413 | 18 | 39 | 111 | 110 | 26 | 100 | 9 |
| Jefferson | 32.2% | 662 | 2,057 | 158 | 177 | 510 | 550 | 393 | 227 | 42 |
| Lemhi | 31.5% | 192 | 609 | 6 | 92 | 180 | 139 | 38 | 127 | 27 |
| Nez Perce | 30.6% | 1,349 | 4,413 | 77 | 348 | 1,165 | 1,474 | 532 | 719 | 98 |
| Teton | 30.3% | 289 | 953 | 47 | 103 | 191 | 323 | 82 | 163 | 44 |
| Bonneville | 30.2% | 3,113 | 10,325 | 456 | 842 | 2,716 | 3,198 | 977 | 1,666 | 470 |
| Boise | 29.5% | 184 | 624 | 21 | 64 | 200 | 155 | 50 | 103 | 31 |
| Power | 28.0% | 238 | 851 | 128 | 104 | 205 | 176 | 85 | 126 | 27 |
| Elmore | 27.3% | 1,475 | 5,406 | 235 | 277 | 1,092 | 2,327 | 575 | 744 | 156 |
| Caribou | 26.4% | 192 | 727 | 9 | 40 | 253 | 233 | 70 | 119 | 3 |
| Valley | 25.5% | 168 | 658 | 19 | 70 | 238 | 163 | 40 | 98 | 30 |
| Kootenai | 25.5% | 3,484 | 13,675 | 171 | 1,095 | 4,436 | 4,489 | 1,175 | 1,877 | 432 |
| Bonner | 24.8% | 880 | 3,545 | 56 | 416 | 1,217 | 976 | 246 | 511 | 123 |
| Twin Falls | 23.8% | 1,786 | 7,504 | 388 | 838 | 2,358 | 2,134 | 746 | 835 | 205 |
| Butte | 23.8% | 58 | 244 | 10 | 34 | 77 | 65 | 22 | 20 | 16 |
| Fremont | 23.3% | 299 | 1,281 | 136 | 99 | 417 | 330 | 165 | 128 | 6 |
| Bear Lake | 22.9% | 133 | 580 | 7 | 84 | 206 | 150 | 70 | 49 | 14 |
| Franklin | 22.1% | 294 | 1,328 | 64 | 79 | 507 | 384 | 100 | 165 | 29 |
| Clark | 21.7% | 26 | 120 | 33 | 17 | 18 | 26 | 4 | 14 | 8 |
| Lewis | 21.6% | 66 | 306 | 5 | 30 | 122 | 83 | 32 | 30 | 4 |
| Canyon | 21.0% | 3,969 | 18,905 | 1,752 | 2,514 | 5,747 | 4,923 | 1,179 | 2,264 | 526 |
| Oneida | 20.9% | 80 | 382 | 0 | 29 | 148 | 125 | 54 | 22 | 4 |
| Bingham | 19.9% | 945 | 4,749 | 310 | 516 | 1,492 | 1,486 | 389 | 438 | 118 |
| Jerome | 19.9% | 432 | 2,175 | 288 | 347 | 564 | 544 | 212 | 180 | 40 |
| Idaho | 19.6% | 253 | 1,291 | 35 | 158 | 544 | 301 | 84 | 153 | 16 |
| Clearwater | 18.8% | 166 | 883 | 28 | 120 | 353 | 216 | 72 | 79 | 15 |
| Gem | 18.5% | 286 | 1,544 | 59 | 251 | 495 | 453 | 111 | 129 | 46 |
| Lincoln | 18.0% | 82 | 455 | 68 | 66 | 124 | 115 | 26 | 52 | 4 |
| Boundary | 18.0% | 172 | 957 | 84 | 125 | 397 | 179 | 46 | 97 | 29 |
| Cassia | 16.9% | 392 | 2,316 | 276 | 409 | 696 | 543 | 136 | 203 | 53 |
| Shoshone | 16.9% | 241 | 1,424 | 30 | 161 | 580 | 412 | 84 | 131 | 26 |
| Adams | 16.0% | 36 | 225 | 4 | 40 | 101 | 44 | 6 | 27 | 3 |
| Payette | 15.8% | 398 | 2,525 | 264 | 283 | 882 | 698 | 183 | 167 | 48 |
| Benewah | 15.6% | 151 | 967 | 21 | 102 | 469 | 224 | 107 | 37 | 7 |
| Washington | 14.9% | 148 | 991 | 105 | 128 | 345 | 265 | 56 | 71 | 21 |
| Minidoka | 14.5% | 334 | 2,297 | 303 | 437 | 609 | 614 | 115 | 175 | 44 |
| Gooding | 14.4% | 238 | 1,649 | 214 | 379 | 443 | 375 | 112 | 104 | 22 |
| Owyhee | 9.1% | 116 | 1,276 | 266 | 247 | 423 | 224 | 42 | 67 | 7 |