Incidence Rates Table
Incidence Rate Report for Iowa by County
Colon & Rectum (All Stages^), 2018-2022
All Races (includes Hispanic), Both Sexes, All Ages
Sorted by Rate
County
|
2023 Rural-Urban Continuum Codes Φ
|
Age-Adjusted Incidence Rate † cases per 100,000 (95% Confidence Interval) 
|
CI*Rank ⋔ (95% Confidence Interval)
|
Average Annual Count
|
Recent Trend |
Recent 5-Year Trend ‡ in Incidence Rates (95% Confidence Interval)
|
|---|---|---|---|---|---|---|
| Iowa 7 | N/A | 40.3 (39.4, 41.2) | N/A | 1,572 |
stable 
|
-1.1 (-1.8, 0.7) |
| US (SEER+NPCR) 1 | N/A | 36.7 (36.6, 36.7) | N/A | 145,073 |
falling 
|
-0.9 (-1.0, -0.8) |
| Palo Alto County 7 | Rural | 26.7 (16.1, 43.0) | 97 (29, 97) | 4 |
falling
|
-1.9 (-3.8, -0.2) |
| Kossuth County 7 | Rural | 29.4 (19.7, 42.7) | 96 (26, 97) | 7 |
falling
|
-2.2 (-3.7, -0.9) |
| Hamilton County 7 | Rural | 31.3 (21.3, 44.9) | 95 (18, 97) | 7 |
falling
|
-1.8 (-3.4, -0.5) |
| Dallas County 7 | Urban | 31.6 (26.7, 37.1) | 94 (53, 97) | 31 |
stable
|
-0.9 (-4.4, 7.5) |
| Adair County 7 | Rural | 32.6 (18.5, 54.3) | 93 (5, 97) | 4 |
|
|
| Cerro Gordo County 7 | Rural | 33.6 (27.1, 41.2) | 92 (36, 97) | 22 |
falling
|
-1.5 (-2.8, -0.3) |
| Grundy County 7 | Urban | 34.2 (23.3, 49.3) | 89 (10, 97) | 7 |
stable
|
-1.2 (-2.6, 0.2) |
| Linn County 7 | Urban | 34.3 (31.1, 37.6) | 91 (56, 94) | 92 |
stable
|
-0.2 (-2.4, 4.8) |
| Black Hawk County 7 | Urban | 34.5 (30.3, 39.2) | 90 (48, 95) | 52 |
falling
|
-2.1 (-3.0, -1.3) |
| Warren County 7 | Urban | 34.7 (28.3, 42.1) | 88 (35, 97) | 21 |
falling
|
-1.5 (-2.8, -0.2) |
| Johnson County 7 | Urban | 35.0 (30.7, 39.8) | 86 (46, 95) | 49 |
falling
|
-1.8 (-2.4, -1.0) |
| Shelby County 7 | Rural | 35.1 (24.3, 50.1) | 87 (10, 97) | 7 |
falling
|
-2.0 (-3.8, -0.3) |
| Dickinson County 7 | Rural | 35.2 (25.0, 48.6) | 85 (11, 97) | 10 |
falling
|
-1.6 (-3.0, -0.3) |
| Story County 7 | Urban | 35.4 (29.9, 41.7) | 84 (36, 96) | 31 |
falling
|
-1.8 (-2.8, -0.8) |
| Winneshiek County 7 | Rural | 35.7 (25.4, 48.9) | 83 (11, 97) | 10 |
falling
|
-3.4 (-9.2, -2.2) |
| Cedar County 7 | Rural | 35.7 (25.4, 49.1) | 82 (13, 97) | 9 |
falling
|
-2.5 (-4.4, -1.4) |
| Hardin County 7 | Rural | 36.1 (25.5, 49.9) | 81 (12, 97) | 9 |
falling
|
-1.7 (-3.2, -0.4) |
| Delaware County 7 | Rural | 36.4 (26.0, 50.0) | 80 (11, 97) | 9 |
falling
|
-2.1 (-3.9, -0.4) |
| Pocahontas County 7 | Rural | 36.4 (21.9, 58.6) | 79 (4, 97) | 4 |
falling
|
-1.8 (-3.7, -0.1) |
| Scott County 7 | Urban | 36.6 (32.9, 40.6) | 78 (45, 91) | 75 |
falling
|
-2.3 (-3.2, -1.5) |
| Washington County 7 | Urban | 36.8 (27.1, 48.9) | 76 (13, 97) | 11 |
falling
|
-2.9 (-4.6, -1.5) |
| Ida County 7 | Rural | 36.9 (22.5, 58.6) | 77 (5, 97) | 4 |
falling
|
-2.3 (-4.4, -0.5) |
| Clayton County 7 | Rural | 37.0 (27.4, 49.5) | 75 (11, 97) | 11 |
falling
|
-2.1 (-3.8, -0.5) |
| Polk County 7 | Urban | 37.1 (34.7, 39.6) | 74 (49, 87) | 188 |
falling
|
-1.7 (-2.2, -1.3) |
| Clarke County 7 | Rural | 37.6 (23.8, 57.0) | 73 (4, 97) | 5 |
|
|
| Montgomery County 7 | Rural | 37.6 (24.4, 56.2) | 72 (5, 97) | 6 |
falling
|
-2.0 (-4.1, -0.2) |
| Boone County 7 | Urban | 39.0 (29.9, 50.2) | 71 (10, 97) | 13 |
falling
|
-1.8 (-3.3, -0.4) |
| Clay County 7 | Rural | 39.4 (28.9, 53.0) | 66 (7, 97) | 10 |
falling
|
-2.0 (-3.3, -0.9) |
| Jones County 7 | Urban | 39.5 (29.6, 52.0) | 69 (10, 97) | 12 |
falling
|
-2.6 (-4.1, -1.1) |
| Howard County 7 | Rural | 39.5 (24.2, 61.1) | 63 (3, 97) | 5 |
falling
|
-2.4 (-4.1, -1.0) |
| Fayette County 7 | Rural | 39.6 (29.8, 51.9) | 70 (9, 96) | 12 |
falling
|
-12.2 (-20.4, -1.6) |
| Wapello County 7 | Rural | 39.6 (31.4, 49.3) | 68 (14, 96) | 17 |
falling
|
-1.9 (-2.9, -0.9) |
| Pottawattamie County 7 | Urban | 39.7 (34.6, 45.4) | 67 (23, 90) | 46 |
falling
|
-2.7 (-6.3, -1.9) |
| Jefferson County 7 | Rural | 39.9 (28.9, 54.3) | 64 (6, 97) | 10 |
falling
|
-2.5 (-3.9, -1.2) |
| Buchanan County 7 | Rural | 39.9 (29.1, 53.6) | 65 (7, 97) | 10 |
stable
|
-1.1 (-3.1, 0.8) |
| Louisa County 7 | Rural | 40.1 (27.2, 57.7) | 62 (5, 97) | 6 |
falling
|
-2.0 (-3.6, -0.4) |
| Carroll County 7 | Rural | 40.1 (30.0, 52.7) | 59 (7, 96) | 12 |
falling
|
-2.7 (-4.0, -1.5) |
| Floyd County 7 | Rural | 40.2 (29.1, 54.6) | 61 (7, 97) | 10 |
stable
|
-1.6 (-3.2, 0.0) |
| Lucas County 7 | Rural | 40.4 (25.0, 62.5) | 60 (3, 97) | 5 |
stable
|
-1.1 (-3.2, 0.7) |
| Lyon County 7 | Rural | 40.8 (27.2, 58.9) | 58 (3, 97) | 6 |
stable
|
-1.4 (-3.0, 0.0) |
| Van Buren County 7 | Rural | 40.9 (26.0, 62.9) | 57 (3, 97) | 5 |
|
|
| Worth County 7 | Rural | 41.3 (26.3, 63.3) | 56 (3, 97) | 5 |
|
|
| Dubuque County 7 | Urban | 41.5 (36.2, 47.3) | 54 (19, 86) | 50 |
falling
|
-2.0 (-3.2, -0.9) |
| Union County 7 | Rural | 41.5 (28.2, 59.4) | 55 (4, 97) | 7 |
stable
|
-1.1 (-2.5, 0.1) |
| Winnebago County 7 | Rural | 41.9 (27.4, 61.6) | 52 (3, 97) | 6 |
stable
|
-1.3 (-3.2, 0.5) |
| Marshall County 7 | Rural | 42.4 (34.5, 51.6) | 51 (10, 92) | 22 |
falling
|
-1.7 (-2.7, -0.7) |
| Page County 7 | Rural | 42.5 (30.9, 57.7) | 53 (5, 97) | 10 |
falling
|
-4.3 (-9.6, -2.3) |
| Henry County 7 | Rural | 42.6 (32.0, 55.7) | 50 (5, 96) | 12 |
stable
|
-0.9 (-2.0, 0.2) |
| Calhoun County 7 | Rural | 42.7 (28.3, 62.6) | 49 (3, 97) | 6 |
falling
|
-1.7 (-3.4, -0.3) |
| Keokuk County 7 | Rural | 42.9 (28.2, 63.0) | 47 (2, 97) | 6 |
stable
|
-1.4 (-3.6, 0.6) |
| Audubon County 7 | Rural | 43.0 (24.4, 71.6) | 48 (1, 97) | 4 |
falling
|
-5.6 (-20.3, -2.7) |
| Lee County 7 | Rural | 43.2 (34.8, 53.1) | 45 (7, 92) | 20 |
falling
|
-1.4 (-2.2, -0.7) |
| Des Moines County 7 | Rural | 43.5 (35.4, 52.9) | 46 (8, 91) | 22 |
falling
|
-2.2 (-3.1, -1.3) |
| Bremer County 7 | Urban | 43.5 (33.2, 56.1) | 44 (5, 95) | 13 |
falling
|
-2.3 (-3.8, -1.0) |
| Poweshiek County 7 | Rural | 43.9 (33.2, 57.5) | 43 (5, 95) | 12 |
falling
|
-3.1 (-4.7, -1.8) |
| Benton County 7 | Urban | 44.1 (34.0, 56.3) | 41 (5, 94) | 14 |
falling
|
-2.4 (-3.9, -1.2) |
| Webster County 7 | Rural | 44.1 (35.9, 53.8) | 42 (8, 89) | 22 |
falling
|
-2.8 (-3.8, -1.9) |
| Jackson County 7 | Rural | 44.2 (33.5, 57.5) | 40 (5, 95) | 13 |
falling
|
-1.7 (-2.8, -0.7) |
| Franklin County 7 | Rural | 44.6 (30.0, 64.6) | 39 (2, 97) | 7 |
stable
|
-1.9 (-4.0, 0.1) |
| Wright County 7 | Rural | 44.7 (32.1, 61.2) | 38 (3, 96) | 9 |
falling
|
-2.0 (-3.4, -0.8) |
| Sioux County 7 | Rural | 44.7 (35.8, 55.3) | 37 (6, 92) | 19 |
falling
|
-2.5 (-4.0, -1.2) |
| Jasper County 7 | Urban | 45.0 (36.8, 54.6) | 34 (7, 87) | 23 |
falling
|
-1.4 (-2.2, -0.6) |
| Harrison County 7 | Urban | 45.1 (32.2, 61.7) | 35 (3, 96) | 9 |
falling
|
-1.6 (-3.3, -0.1) |
| Ringgold County 7 | Rural | 45.2 (25.7, 76.4) | 36 (1, 97) | 4 |
|
|
| Muscatine County 7 | Rural | 45.3 (37.3, 54.5) | 33 (7, 87) | 24 |
falling
|
-1.5 (-2.8, -0.2) |
| Iowa County 7 | Rural | 45.5 (33.0, 61.5) | 32 (2, 95) | 10 |
stable
|
-1.0 (-2.8, 0.7) |
| O'Brien County 7 | Rural | 46.4 (32.7, 64.0) | 30 (2, 96) | 9 |
stable
|
-1.4 (-3.3, 0.2) |
| Chickasaw County 7 | Rural | 46.5 (32.2, 65.6) | 26 (2, 97) | 8 |
stable
|
-0.9 (-2.9, 1.0) |
| Hancock County 7 | Rural | 46.8 (31.8, 66.9) | 31 (1, 97) | 7 |
stable
|
-0.6 (-2.2, 1.0) |
| Plymouth County 7 | Rural | 46.8 (36.9, 58.7) | 29 (4, 92) | 16 |
falling
|
-2.8 (-3.9, -1.9) |
| Appanoose County 7 | Rural | 47.0 (34.1, 64.0) | 25 (2, 95) | 10 |
falling
|
-2.2 (-3.5, -1.1) |
| Allamakee County 7 | Rural | 47.1 (33.6, 64.4) | 27 (2, 95) | 9 |
stable
|
-1.6 (-3.6, 0.2) |
| Mahaska County 7 | Rural | 47.1 (35.5, 61.4) | 28 (3, 94) | 12 |
stable
|
-1.0 (-2.3, 0.2) |
| Tama County 7 | Rural | 48.1 (35.9, 63.5) | 23 (3, 93) | 11 |
stable
|
-1.2 (-2.6, 0.0) |
| Davis County 7 | Rural | 48.3 (30.8, 72.3) | 22 (1, 97) | 5 |
stable
|
-1.0 (-3.0, 0.8) |
| Marion County 7 | Rural | 48.3 (39.1, 59.2) | 21 (4, 81) | 21 |
stable
|
-0.2 (-1.0, 0.7) |
| Madison County 7 | Urban | 48.3 (35.4, 64.7) | 24 (3, 94) | 10 |
stable
|
-0.8 (-2.2, 0.7) |
| Clinton County 7 | Rural | 48.5 (40.7, 57.4) | 20 (5, 76) | 30 |
falling
|
-1.7 (-2.5, -1.0) |
| Cherokee County 7 | Rural | 48.5 (35.2, 66.2) | 18 (2, 95) | 10 |
stable
|
-1.3 (-3.1, 0.4) |
| Woodbury County 7 | Urban | 48.6 (43.0, 54.7) | 19 (8, 62) | 58 |
falling
|
-1.0 (-1.9, -0.1) |
| Crawford County 7 | Rural | 49.1 (36.3, 65.1) | 17 (3, 93) | 10 |
stable
|
-1.1 (-2.7, 0.4) |
| Mills County 7 | Urban | 49.2 (35.9, 66.4) | 15 (2, 93) | 10 |
falling
|
-1.7 (-3.4, -0.1) |
| Guthrie County 7 | Urban | 49.4 (34.1, 69.9) | 16 (1, 96) | 8 |
falling
|
-1.7 (-3.4, -0.1) |
| Butler County 7 | Rural | 49.7 (36.0, 67.2) | 14 (2, 93) | 10 |
stable
|
-1.2 (-2.7, 0.2) |
| Monona County 7 | Rural | 51.2 (34.6, 73.8) | 13 (1, 95) | 7 |
stable
|
-1.4 (-3.2, 0.1) |
| Buena Vista County 7 | Rural | 52.5 (39.7, 68.2) | 12 (2, 87) | 12 |
falling
|
-2.3 (-4.2, -0.7) |
| Humboldt County 7 | Rural | 53.5 (37.0, 75.5) | 11 (1, 93) | 8 |
stable
|
-1.9 (-4.3, 0.2) |
| Fremont County 7 | Rural | 54.1 (34.3, 82.4) | 10 (1, 97) | 5 |
stable
|
-1.3 (-3.4, 0.6) |
| Emmet County 7 | Rural | 57.0 (40.7, 78.6) | 9 (1, 91) | 9 |
stable
|
-0.3 (-1.5, 0.9) |
| Osceola County 7 | Rural | 57.0 (35.1, 88.2) | 8 (1, 97) | 5 |
stable
|
-0.1 (-2.5, 2.2) |
| Mitchell County 7 | Rural | 58.7 (41.6, 80.9) | 7 (1, 89) | 9 |
stable
|
-1.3 (-3.5, 0.7) |
| Decatur County 7 | Rural | 60.3 (38.9, 89.5) | 6 (1, 95) | 6 |
stable
|
-1.0 (-3.1, 1.0) |
| Cass County 7 | Rural | 61.3 (45.3, 81.5) | 5 (1, 71) | 11 |
stable
|
0.2 (-1.3, 1.6) |
| Sac County 7 | Rural | 69.0 (48.9, 95.0) | 4 (1, 62) | 10 |
stable
|
-0.7 (-2.8, 1.2) |
| Monroe County 7 | Rural | 69.5 (48.7, 97.4) | 3 (1, 72) | 8 |
stable
|
1.1 (-1.2, 3.7) |
| Greene County 7 | Rural | 70.9 (50.3, 97.6) | 2 (1, 60) | 9 |
stable
|
0.5 (-1.2, 2.1) |
| Adams County 7 | Rural | 74.2 (40.7, 124.9) | 1 (1, 96) | 4 |
|
|
| Taylor County 7 | Rural |
|
|
|
|
|
| Wayne County 7 | Rural |
|
|
|
|
|
Notes:
Created by statecancerprofiles.cancer.gov on 03/24/2026 7:11 am.
State Cancer Registries may provide more current or more local data.
† Incidence rates (cases per 100,000 population per year) are age-adjusted to the 2000 US standard population (SEER areas use 20 age groups and NPCR areas use 19 age groups). Rates are for invasive cancer only (except for bladder cancer which is invasive and in situ) or unless otherwise specified. Rates calculated using SEER*Stat. Population counts for denominators are based on Census populations as modified by NCI. The US Population Data File is used for SEER and NPCR incidence rates.
Rates and trends are computed using different standards for malignancy. For more information see malignant.html.
^ All Stages refers to any stage. Due to changes in stage coding, Combined Summary Stage with Expanded Regional Codes (2004+) is used for data from Surveillance, Epidemiology, and End Results (SEER) databases and Merged Summary Stage is used for data from National Program of Cancer Registries databases. Due to the increased complexity with staging, other staging variables maybe used if necessary.
Φ Rural–urban county classifications are based on the 2023 USDA Rural–Urban Continuum Codes (except for Connecticut Counties which use 2013 codes). State-level cancer rates for rural areas are calculated using cancer cases registered exclusively in rural counties, while state-level cancer rates for urban areas are calculated using cases registered exclusively in urban counties.
Source: SEER and NPCR data. For more specific information please see the table.
* Data has been suppressed to ensure confidentiality and stability of rate estimates. Counts are suppressed if fewer than 16 records were reported in a specific area-sex-race category.
Data for United States does not include Puerto Rico.