IA / county disease rankings
Counties with the highest cancer incidence rates in Iowa
Among 99 Iowa counties with published values, the counties with the highest cancer incidence rates are Cass County, IA (601.4, 1.33 times the U.S. rate of 453.4), Pocahontas County, IA (591, 1.3 times the U.S. rate of 453.4) and Palo Alto County, IA (563.1, 1.24 times the U.S. rate of 453.4). Values are per 100,000, age-adjusted. 64 of the 99 are significantly above the U.S. rate.
Source: NCI and CDC State Cancer Profiles, both sexes, all ages. These are county-level figures, age-adjusted as published by the source, compared with the U.S. rate. A high rate does not prove an environmental cause: age, smoking, income, access to care, screening and chance all move county rates, and small counties swing widely. Significant means the lower bound of the county’s 95 percent confidence interval is above the U.S. rate.
All Iowa counties, highest first
All cancer cancer new cases, per 100,000, age-adjusted.
| Rank | County | State | Value | U.S. rate | Times reference | Significant |
|---|---|---|---|---|---|---|
| 1 | Cass County | IA | 601.4 | 453.4 | 1.33x | Significant |
| 2 | Pocahontas County | IA | 591 | 453.4 | 1.3x | Significant |
| 3 | Palo Alto County | IA | 563.1 | 453.4 | 1.24x | Significant |
| 4 | Grundy County | IA | 553.5 | 453.4 | 1.22x | Significant |
| 5 | Clinton County | IA | 553.3 | 453.4 | 1.22x | Significant |
| 6 | Butler County | IA | 548.7 | 453.4 | 1.21x | Significant |
| 7 | Jackson County | IA | 545.8 | 453.4 | 1.2x | Significant |
| 8 | Monona County | IA | 543.8 | 453.4 | 1.2x | Significant |
| 9 | Tama County | IA | 543.5 | 453.4 | 1.2x | Significant |
| 10 | Howard County | IA | 541.7 | 453.4 | 1.19x | Significant |
| 11 | Buchanan County | IA | 541.5 | 453.4 | 1.19x | Significant |
| 12 | Iowa County | IA | 537.5 | 453.4 | 1.19x | Significant |
| 13 | Page County | IA | 537.2 | 453.4 | 1.18x | Significant |
| 14 | Madison County | IA | 536.4 | 453.4 | 1.18x | Significant |
| 15 | Osceola County | IA | 534.4 | 453.4 | 1.18x | Significant |
| 16 | Floyd County | IA | 532.3 | 453.4 | 1.17x | Significant |
| 17 | Marion County | IA | 532.3 | 453.4 | 1.17x | Significant |
| 18 | Clay County | IA | 532.1 | 453.4 | 1.17x | Significant |
| 19 | Sac County | IA | 527.9 | 453.4 | 1.16x | Significant |
| 20 | Appanoose County | IA | 526.9 | 453.4 | 1.16x | Significant |
| 21 | Des Moines County | IA | 526.6 | 453.4 | 1.16x | Significant |
| 22 | Franklin County | IA | 526.5 | 453.4 | 1.16x | Significant |
| 23 | Chickasaw County | IA | 526 | 453.4 | 1.16x | Significant |
| 24 | Crawford County | IA | 524.8 | 453.4 | 1.16x | Significant |
| 25 | Plymouth County | IA | 523.5 | 453.4 | 1.15x | Significant |
| 26 | Cedar County | IA | 522.5 | 453.4 | 1.15x | Significant |
| 27 | Humboldt County | IA | 522.3 | 453.4 | 1.15x | Significant |
| 28 | Wapello County | IA | 521.8 | 453.4 | 1.15x | Significant |
| 29 | Black Hawk County | IA | 521.6 | 453.4 | 1.15x | Significant |
| 30 | Adams County | IA | 521.3 | 453.4 | 1.15x | No |
| 31 | Montgomery County | IA | 521.3 | 453.4 | 1.15x | Significant |
| 32 | Woodbury County | IA | 520.7 | 453.4 | 1.15x | Significant |
| 33 | Cherokee County | IA | 518.9 | 453.4 | 1.14x | Significant |
| 34 | Van Buren County | IA | 518.7 | 453.4 | 1.14x | Significant |
| 35 | Decatur County | IA | 517.8 | 453.4 | 1.14x | Significant |
| 36 | Dickinson County | IA | 517.5 | 453.4 | 1.14x | Significant |
| 37 | Louisa County | IA | 517.5 | 453.4 | 1.14x | Significant |
| 38 | Linn County | IA | 517.3 | 453.4 | 1.14x | Significant |
| 39 | O'Brien County | IA | 517.2 | 453.4 | 1.14x | Significant |
| 40 | Keokuk County | IA | 514.1 | 453.4 | 1.13x | Significant |
| 41 | Lyon County | IA | 514 | 453.4 | 1.13x | Significant |
| 42 | Harrison County | IA | 513 | 453.4 | 1.13x | Significant |
| 43 | Greene County | IA | 512.6 | 453.4 | 1.13x | Significant |
| 44 | Mitchell County | IA | 512.1 | 453.4 | 1.13x | Significant |
| 45 | Boone County | IA | 511.5 | 453.4 | 1.13x | Significant |
| 46 | Union County | IA | 511.5 | 453.4 | 1.13x | Significant |
| 47 | Lee County | IA | 510.4 | 453.4 | 1.13x | Significant |
| 48 | Muscatine County | IA | 509.9 | 453.4 | 1.12x | Significant |
| 49 | Monroe County | IA | 508.9 | 453.4 | 1.12x | No |
| 50 | Scott County | IA | 507.8 | 453.4 | 1.12x | Significant |
| 51 | Bremer County | IA | 506.9 | 453.4 | 1.12x | Significant |
| 52 | Mahaska County | IA | 506.3 | 453.4 | 1.12x | Significant |
| 53 | Dubuque County | IA | 505.7 | 453.4 | 1.12x | Significant |
| 54 | Davis County | IA | 504.8 | 453.4 | 1.11x | No |
| 55 | Jasper County | IA | 504.3 | 453.4 | 1.11x | Significant |
| 56 | Warren County | IA | 502.3 | 453.4 | 1.11x | Significant |
| 57 | Polk County | IA | 501.4 | 453.4 | 1.11x | Significant |
| 58 | Benton County | IA | 500.3 | 453.4 | 1.1x | Significant |
| 59 | Worth County | IA | 500.3 | 453.4 | 1.1x | No |
| 60 | Delaware County | IA | 498.3 | 453.4 | 1.1x | Significant |
| 61 | Winnebago County | IA | 497.4 | 453.4 | 1.1x | No |
| 62 | Marshall County | IA | 496.2 | 453.4 | 1.09x | Significant |
| 63 | Cerro Gordo County | IA | 495.6 | 453.4 | 1.09x | Significant |
| 64 | Washington County | IA | 495.6 | 453.4 | 1.09x | Significant |
| 65 | Lucas County | IA | 494.9 | 453.4 | 1.09x | No |
| 66 | Johnson County | IA | 494.8 | 453.4 | 1.09x | Significant |
| 67 | Fayette County | IA | 494.5 | 453.4 | 1.09x | Significant |
| 68 | Wright County | IA | 494.4 | 453.4 | 1.09x | No |
| 69 | Ringgold County | IA | 494.2 | 453.4 | 1.09x | No |
| 70 | Sioux County | IA | 493.9 | 453.4 | 1.09x | Significant |
| 71 | Pottawattamie County | IA | 492.6 | 453.4 | 1.09x | Significant |
| 72 | Taylor County | IA | 490.6 | 453.4 | 1.08x | No |
| 73 | Poweshiek County | IA | 488.5 | 453.4 | 1.08x | No |
| 74 | Allamakee County | IA | 487.4 | 453.4 | 1.07x | No |
| 75 | Webster County | IA | 484.4 | 453.4 | 1.07x | Significant |
| 76 | Jones County | IA | 484.3 | 453.4 | 1.07x | No |
| 77 | Clayton County | IA | 482.9 | 453.4 | 1.07x | No |
| 78 | Guthrie County | IA | 481.5 | 453.4 | 1.06x | No |
| 79 | Henry County | IA | 479.6 | 453.4 | 1.06x | No |
| 80 | Ida County | IA | 479.6 | 453.4 | 1.06x | No |
| 81 | Fremont County | IA | 478.5 | 453.4 | 1.06x | No |
| 82 | Carroll County | IA | 478.2 | 453.4 | 1.05x | No |
| 83 | Mills County | IA | 474.8 | 453.4 | 1.05x | No |
| 84 | Calhoun County | IA | 474.5 | 453.4 | 1.05x | No |
| 85 | Hancock County | IA | 474.2 | 453.4 | 1.05x | No |
| 86 | Audubon County | IA | 469.5 | 453.4 | 1.04x | No |
| 87 | Hamilton County | IA | 468.9 | 453.4 | 1.03x | No |
| 88 | Shelby County | IA | 468.2 | 453.4 | 1.03x | No |
| 89 | Clarke County | IA | 466.2 | 453.4 | 1.03x | No |
| 90 | Emmet County | IA | 462.6 | 453.4 | 1.02x | No |
| 91 | Dallas County | IA | 461.3 | 453.4 | 1.02x | No |
| 92 | Winneshiek County | IA | 460.6 | 453.4 | 1.02x | No |
| 93 | Hardin County | IA | 460.1 | 453.4 | 1.01x | No |
| 94 | Story County | IA | 457.8 | 453.4 | 1.01x | No |
| 95 | Wayne County | IA | 453.9 | 453.4 | 1x | No |
| 96 | Jefferson County | IA | 452.3 | 453.4 | 1x | No |
| 97 | Kossuth County | IA | 447 | 453.4 | 0.99x | No |
| 98 | Adair County | IA | 438.1 | 453.4 | 0.97x | No |
| 99 | Buena Vista County | IA | 416.9 | 453.4 | 0.92x | No |