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Demographics Table

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Demographic Data Report for Iowa by County
Education: Less than High School
Population Ages 25+
All Races (includes Hispanic), Both Sexes
2020-2024 American Community Survey 5-Year Data
Sorted by Percent

County
 sort alphabetically by name ascending
2023 Rural-Urban Continuum Codes Φ
 sort by rural urban descending
Value (Percent)
 sort by value descending
People(Education: Less Than High School)
 sort by sample size ascending
Rank within US
(of 3143 counties)
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Iowa N/A 6.7 145,298 11 of 52
United States N/A 10.4 23,992,410 N/A
Story County Urban 2.6 1,399 22
Dickinson County Rural 3.1 418 39
Grundy County Urban 3.1 272 39
Warren County Urban 3.3 1,187 46
Madison County Urban 3.4 391 50
Mills County Urban 3.4 351 50
Johnson County Urban 3.7 3,507 82
Bremer County Urban 3.8 634 90
Winneshiek County Rural 3.8 513 90
Guthrie County Urban 4.1 317 113
Cedar County Rural 4.3 565 140
Iowa County Rural 4.5 520 169
Dallas County Urban 4.6 3,265 177
Monroe County Rural 4.6 238 177
Lyon County Rural 4.7 364 199
Shelby County Rural 4.7 381 199
Benton County Urban 4.8 858 211
Carroll County Rural 4.8 674 211
Jones County Urban 4.8 728 211
Linn County Urban 4.8 7,616 211
Boone County Urban 4.9 945 235
Jefferson County Rural 4.9 581 235
Kossuth County Rural 4.9 504 235
Floyd County Rural 5.0 530 261
Adair County Rural 5.1 268 279
Poweshiek County Rural 5.1 627 279
Cerro Gordo County Rural 5.2 1,606 297
Marion County Rural 5.2 1,158 297
Plymouth County Rural 5.2 916 297
Winnebago County Rural 5.3 390 322
Cass County Rural 5.5 506 366
Ida County Rural 5.5 259 366
Hamilton County Rural 5.6 584 397
Keokuk County Rural 5.6 392 397
Jackson County Rural 5.8 808 432
Buchanan County Rural 5.9 827 464
Scott County Urban 5.9 6,997 464
Jasper County Urban 6.0 1,592 490
Ringgold County Rural 6.0 194 490
Adams County Rural 6.1 158 514
Butler County Rural 6.1 613 514
Dubuque County Urban 6.1 4,078 514
Harrison County Urban 6.2 628 547
Chickasaw County Rural 6.3 519 572
Delaware County Rural 6.3 767 572
Des Moines County Rural 6.3 1,690 572
Greene County Rural 6.4 392 607
Worth County Rural 6.4 341 607
Mahaska County Rural 6.5 958 630
Washington County Urban 6.5 1,003 630
Page County Rural 6.6 744 658
Clay County Rural 6.7 764 681
Clinton County Rural 6.7 2,158 681
Palo Alto County Rural 6.7 403 681
Cherokee County Rural 6.8 568 704
Humboldt County Rural 6.8 450 704
Fayette County Rural 6.9 931 734
Fremont County Rural 6.9 326 734
Mitchell County Rural 6.9 505 734
Hardin County Rural 7.0 850 766
Webster County Rural 7.0 1,731 766
Black Hawk County Urban 7.1 5,901 793
Calhoun County Rural 7.1 496 793
Sac County Rural 7.2 501 822
Allamakee County Rural 7.4 721 877
Clayton County Rural 7.4 907 877
Taylor County Rural 7.4 303 877
Howard County Rural 7.5 474 915
Lee County Rural 7.5 1,776 915
Monona County Rural 7.5 455 915
Polk County Urban 7.5 25,375 915
Audubon County Rural 7.7 314 983
Lucas County Rural 8.2 503 1,124
Henry County Rural 8.3 1,154 1,147
Montgomery County Rural 8.3 599 1,147
Wright County Rural 8.3 715 1,147
Tama County Rural 8.5 977 1,198
Union County Rural 8.5 696 1,198
Hancock County Rural 8.6 656 1,233
Sioux County Rural 9.1 1,959 1,369
Wayne County Rural 9.1 398 1,369
Pottawattamie County Urban 9.3 5,982 1,440
Pocahontas County Rural 9.4 459 1,469
Franklin County Rural 9.5 646 1,501
O'Brien County Rural 9.5 915 1,501
Emmet County Rural 9.9 651 1,602
Appanoose County Rural 10.2 882 1,661
Decatur County Rural 10.3 490 1,685
Muscatine County Rural 10.3 2,988 1,685
Clarke County Rural 10.7 679 1,780
Wapello County Rural 11.4 2,745 1,913
Woodbury County Urban 12.4 8,432 2,100
Osceola County Rural 12.6 543 2,133
Marshall County Rural 13.1 3,479 2,229
Louisa County Rural 14.3 1,078 2,427
Van Buren County Rural 14.3 721 2,427
Crawford County Rural 16.4 1,740 2,691
Buena Vista County Rural 18.7 2,435 2,889
Davis County Rural 19.1 1,094 2,912

Notes:
Created by statecancerprofiles.cancer.gov on 03/20/2026 10:24 am.

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: Demographic data provided by the Census Bureau and the American Community Survey.

For more information about Education: Less than High School, see the dictionary.

Data for United States does not include Puerto Rico.

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