

A focus on "some college, no degree" can improve state college attainment rates. More: Iowa 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 | 39.0% | 140,734 | 361,262 | 8,765 | 23,473 | 98,202 | 90,088 | 40,479 | 81,170 | 19,085 |
| Johnson | 64.4% | 11,749 | 18,252 | 258 | 441 | 2,276 | 3,528 | 1,486 | 6,658 | 3,605 |
| Story | 63.8% | 6,892 | 10,802 | 53 | 272 | 1,093 | 2,492 | 892 | 3,873 | 2,127 |
| Bremer | 51.6% | 1,145 | 2,219 | 12 | 73 | 466 | 523 | 461 | 601 | 83 |
| Dallas | 49.8% | 2,950 | 5,921 | 240 | 331 | 1,248 | 1,152 | 520 | 2,061 | 369 |
| Grundy | 47.9% | 579 | 1,208 | 6 | 37 | 261 | 325 | 224 | 315 | 40 |
| Pocahontas | 46.3% | 313 | 676 | 9 | 36 | 167 | 151 | 132 | 157 | 24 |
| Polk | 46.0% | 27,422 | 59,658 | 1,533 | 4,191 | 13,134 | 13,378 | 5,220 | 18,497 | 3,705 |
| Linn | 45.9% | 12,423 | 27,056 | 220 | 1,040 | 5,808 | 7,565 | 3,378 | 7,715 | 1,330 |
| Sioux | 44.1% | 1,338 | 3,034 | 58 | 161 | 709 | 768 | 390 | 757 | 191 |
| Humboldt | 43.9% | 408 | 930 | 19 | 35 | 236 | 232 | 145 | 237 | 26 |
| Marion | 41.7% | 1,558 | 3,738 | 59 | 223 | 1,145 | 753 | 490 | 894 | 174 |
| Cedar | 41.2% | 833 | 2,022 | 14 | 87 | 577 | 511 | 326 | 457 | 50 |
| Lyon | 40.3% | 494 | 1,225 | 7 | 81 | 355 | 288 | 217 | 249 | 28 |
| Franklin | 40.2% | 443 | 1,101 | 60 | 116 | 304 | 178 | 213 | 181 | 49 |
| Carroll | 40.0% | 889 | 2,224 | 24 | 88 | 628 | 595 | 350 | 434 | 105 |
| Hardin | 39.8% | 713 | 1,792 | 17 | 96 | 461 | 505 | 366 | 300 | 47 |
| Plymouth | 39.6% | 1,054 | 2,662 | 21 | 101 | 825 | 661 | 357 | 615 | 82 |
| Scott | 39.5% | 8,594 | 21,747 | 347 | 1,653 | 5,713 | 5,440 | 2,393 | 4,904 | 1,297 |
| Winneshiek | 39.5% | 784 | 1,987 | 10 | 52 | 619 | 522 | 313 | 397 | 74 |
| Cerro Gordo | 39.2% | 1,923 | 4,907 | 46 | 280 | 1,298 | 1,360 | 810 | 935 | 178 |
| Dickinson | 39.1% | 635 | 1,623 | 0 | 73 | 435 | 480 | 225 | 378 | 32 |
| Mitchell | 38.3% | 373 | 974 | 37 | 49 | 288 | 227 | 150 | 193 | 30 |
| Hamilton | 38.2% | 695 | 1,819 | 36 | 112 | 571 | 405 | 264 | 368 | 63 |
| Palo Alto | 38.0% | 337 | 888 | 30 | 76 | 211 | 234 | 189 | 122 | 26 |
| Benton | 37.9% | 1,109 | 2,923 | 15 | 91 | 803 | 905 | 488 | 501 | 120 |
| Black Hawk | 37.3% | 5,680 | 15,214 | 399 | 957 | 4,243 | 3,935 | 1,695 | 3,244 | 741 |
| Dubuque | 37.0% | 3,913 | 10,581 | 186 | 436 | 3,348 | 2,698 | 1,120 | 2,394 | 399 |
| Warren | 37.0% | 1,769 | 4,785 | 63 | 285 | 1,508 | 1,160 | 633 | 978 | 158 |
| Kossuth | 37.0% | 564 | 1,526 | 35 | 65 | 368 | 494 | 228 | 286 | 50 |
| Hancock | 36.8% | 451 | 1,226 | 33 | 56 | 322 | 364 | 170 | 235 | 46 |
| Butler | 36.1% | 575 | 1,592 | 0 | 88 | 425 | 504 | 256 | 283 | 36 |
| Boone | 35.6% | 1,073 | 3,016 | 27 | 170 | 804 | 942 | 336 | 674 | 63 |
| Keokuk | 34.9% | 404 | 1,159 | 5 | 69 | 402 | 279 | 208 | 178 | 18 |
| Shelby | 34.8% | 422 | 1,213 | 3 | 33 | 421 | 334 | 140 | 236 | 46 |
| Webster | 34.6% | 1,544 | 4,467 | 91 | 444 | 1,449 | 939 | 632 | 690 | 222 |
| Winnebago | 34.1% | 380 | 1,115 | 25 | 56 | 316 | 338 | 170 | 182 | 28 |
| Iowa | 33.4% | 584 | 1,750 | 4 | 68 | 587 | 507 | 249 | 295 | 40 |
| O'Brien | 33.2% | 478 | 1,441 | 55 | 136 | 479 | 293 | 200 | 256 | 22 |
| Adair | 33.1% | 250 | 756 | 0 | 29 | 274 | 203 | 149 | 92 | 9 |
| Monona | 32.8% | 301 | 918 | 8 | 52 | 324 | 233 | 95 | 176 | 30 |
| Ida | 32.7% | 241 | 736 | 9 | 31 | 216 | 239 | 120 | 116 | 5 |
| Jones | 32.5% | 828 | 2,546 | 37 | 146 | 896 | 639 | 291 | 443 | 94 |
| Cherokee | 32.4% | 364 | 1,124 | 1 | 103 | 311 | 345 | 149 | 180 | 35 |
| Delaware | 32.1% | 654 | 2,035 | 20 | 101 | 806 | 454 | 273 | 336 | 45 |
| Davis | 32.0% | 291 | 908 | 130 | 28 | 227 | 232 | 142 | 130 | 19 |
| Washington | 31.8% | 749 | 2,358 | 120 | 95 | 833 | 561 | 302 | 391 | 56 |
| Madison | 31.7% | 521 | 1,642 | 12 | 84 | 597 | 428 | 222 | 258 | 41 |
| Appanoose | 31.7% | 462 | 1,458 | 37 | 111 | 520 | 328 | 202 | 235 | 25 |
| Poweshiek | 31.6% | 617 | 1,950 | 7 | 113 | 760 | 453 | 172 | 298 | 147 |
| Mahaska | 31.6% | 854 | 2,701 | 54 | 189 | 964 | 640 | 231 | 537 | 86 |
| Audubon | 31.5% | 188 | 596 | 1 | 31 | 211 | 165 | 86 | 102 | 0 |
| Clinton | 31.5% | 1,795 | 5,700 | 43 | 375 | 1,945 | 1,542 | 695 | 962 | 138 |
| Harrison | 30.8% | 528 | 1,715 | 1 | 115 | 601 | 470 | 220 | 254 | 54 |
| Clay | 30.6% | 583 | 1,908 | 19 | 76 | 543 | 687 | 256 | 276 | 51 |
| Des Moines | 30.4% | 1,432 | 4,716 | 77 | 349 | 1,528 | 1,330 | 598 | 708 | 126 |
| Chickasaw | 30.3% | 405 | 1,337 | 25 | 62 | 529 | 316 | 173 | 221 | 11 |
| Sac | 30.1% | 311 | 1,034 | 22 | 42 | 360 | 299 | 143 | 144 | 24 |
| Allamakee | 29.9% | 469 | 1,568 | 114 | 130 | 494 | 361 | 186 | 234 | 49 |
| Mills | 29.9% | 507 | 1,697 | 21 | 153 | 548 | 468 | 214 | 249 | 44 |
| Buena Vista | 29.7% | 614 | 2,066 | 230 | 343 | 504 | 375 | 174 | 387 | 53 |
| Floyd | 29.6% | 527 | 1,781 | 58 | 82 | 631 | 483 | 295 | 202 | 30 |
| Clarke | 29.6% | 309 | 1,045 | 55 | 59 | 373 | 249 | 139 | 148 | 22 |
| Worth | 29.5% | 243 | 825 | 3 | 63 | 258 | 258 | 130 | 100 | 13 |
| Calhoun | 29.4% | 332 | 1,128 | 28 | 94 | 334 | 340 | 132 | 173 | 27 |
| Marshall | 29.1% | 1,367 | 4,697 | 417 | 501 | 1,376 | 1,036 | 476 | 751 | 140 |
| Adams | 29.1% | 125 | 430 | 4 | 35 | 127 | 139 | 52 | 68 | 5 |
| Jasper | 29.1% | 1,336 | 4,597 | 40 | 242 | 1,746 | 1,233 | 440 | 770 | 126 |
| Howard | 29.0% | 302 | 1,041 | 9 | 77 | 392 | 261 | 157 | 134 | 11 |
| Union | 28.8% | 366 | 1,272 | 17 | 107 | 456 | 326 | 118 | 231 | 17 |
| Monroe | 28.8% | 254 | 883 | 29 | 46 | 365 | 189 | 82 | 136 | 36 |
| Cass | 28.4% | 421 | 1,482 | 18 | 70 | 528 | 445 | 143 | 200 | 78 |
| Pottawattamie | 28.4% | 3,152 | 11,104 | 333 | 1,176 | 3,554 | 2,889 | 1,126 | 1,706 | 320 |
| Henry | 28.3% | 749 | 2,646 | 34 | 206 | 953 | 704 | 235 | 434 | 80 |
| Tama | 28.3% | 553 | 1,957 | 43 | 132 | 585 | 644 | 235 | 284 | 34 |
| Fayette | 28.3% | 642 | 2,272 | 33 | 123 | 785 | 689 | 309 | 260 | 73 |
| Jefferson | 28.2% | 438 | 1,553 | 33 | 98 | 522 | 462 | 119 | 275 | 44 |
| Wayne | 28.2% | 172 | 611 | 13 | 27 | 239 | 160 | 64 | 82 | 26 |
| Muscatine | 28.1% | 1,493 | 5,321 | 316 | 569 | 1,656 | 1,287 | 556 | 810 | 127 |
| Woodbury | 28.0% | 3,841 | 13,727 | 1,241 | 1,455 | 3,861 | 3,329 | 1,098 | 2,253 | 490 |
| Buchanan | 27.9% | 673 | 2,411 | 93 | 107 | 808 | 730 | 302 | 331 | 40 |
| Osceola | 27.6% | 187 | 678 | 16 | 45 | 198 | 232 | 85 | 93 | 9 |
| Guthrie | 26.8% | 296 | 1,105 | 37 | 74 | 412 | 286 | 145 | 137 | 14 |
| Clayton | 26.4% | 516 | 1,956 | 61 | 103 | 734 | 542 | 222 | 257 | 37 |
| Emmet | 26.4% | 291 | 1,104 | 39 | 148 | 265 | 361 | 130 | 119 | 42 |
| Jackson | 26.0% | 558 | 2,145 | 62 | 210 | 807 | 508 | 293 | 221 | 44 |
| Fremont | 25.7% | 209 | 812 | 22 | 61 | 291 | 229 | 90 | 100 | 19 |
| Wright | 25.6% | 366 | 1,431 | 61 | 82 | 489 | 433 | 165 | 176 | 25 |
| Greene | 25.3% | 245 | 967 | 6 | 119 | 320 | 277 | 122 | 106 | 17 |
| Wapello | 25.3% | 998 | 3,940 | 105 | 403 | 1,521 | 913 | 518 | 382 | 98 |
| Decatur | 25.3% | 214 | 845 | 2 | 67 | 351 | 211 | 74 | 138 | 2 |
| Crawford | 25.0% | 447 | 1,787 | 192 | 228 | 553 | 367 | 179 | 255 | 13 |
| Page | 24.8% | 470 | 1,892 | 41 | 187 | 706 | 488 | 153 | 299 | 18 |
| Ringgold | 24.8% | 111 | 448 | 33 | 19 | 171 | 114 | 37 | 59 | 15 |
| Montgomery | 23.4% | 306 | 1,307 | 41 | 131 | 470 | 359 | 153 | 137 | 16 |
| Lee | 22.4% | 925 | 4,125 | 10 | 440 | 1,563 | 1,187 | 386 | 486 | 53 |
| Van Buren | 22.1% | 179 | 809 | 38 | 62 | 308 | 222 | 92 | 68 | 19 |
| Taylor | 21.6% | 145 | 671 | 12 | 65 | 291 | 158 | 69 | 70 | 6 |
| Louisa | 21.0% | 323 | 1,540 | 95 | 183 | 567 | 372 | 142 | 152 | 29 |
| Lucas | 20.4% | 199 | 975 | 30 | 161 | 342 | 243 | 87 | 108 | 4 |