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Iowa counties
99 counties in Iowa, sorted by population. Every county's ZIPs are included in the Iowa CSV — $7.
| County | ZIP codes | Population | Median HH income | |
|---|---|---|---|---|
| Polk | 42 | 576.8K | $91,053 | View → |
| Linn | 29 | 254K | $80,884 | View → |
| Johnson | 24 | 230.8K | $75,316 | View → |
| Scott | 22 | 178.6K | $80,986 | View → |
| Dallas | 25 | 168.2K | $108,895 | View → |
| Black Hawk | 18 | 145.8K | $70,249 | View → |
| Warren | 20 | 120.2K | $90,442 | View → |
| Story | 23 | 115.2K | $78,505 | View → |
| Woodbury | 26 | 112.7K | $74,333 | View → |
| Dubuque | 20 | 112.7K | $79,347 | View → |
| Pottawattamie | 24 | 110.2K | $73,211 | View → |
| Boone | 21 | 80.8K | $73,923 | View → |
| Butler | 18 | 76.9K | $78,475 | View → |
| Grundy | 17 | 70.2K | $80,877 | View → |
| Jasper | 21 | 62.4K | $75,343 | View → |
| Sioux | 18 | 61.4K | $82,386 | View → |
| Webster | 22 | 60.5K | $68,973 | View → |
| Tama | 19 | 58.6K | $73,103 | View → |
| Clinton | 21 | 58.4K | $69,561 | View → |
| Muscatine | 14 | 54.8K | $74,113 | View → |
| Mills | 11 | 54.2K | $82,898 | View → |
| Wapello | 12 | 52.3K | $67,862 | View → |
| Marion | 19 | 51.3K | $79,019 | View → |
| Cerro Gordo | 17 | 50.8K | $71,565 | View → |
| Marshall | 21 | 48.9K | $75,547 | View → |
| Benton | 24 | 47.9K | $89,103 | View → |
| Washington | 13 | 45K | $72,159 | View → |
| Mahaska | 19 | 44.9K | $74,096 | View → |
| Des Moines | 12 | 44.6K | $65,773 | View → |
| Louisa | 12 | 44.6K | $68,558 | View → |
| Madison | 15 | 43.5K | $102,763 | View → |
| Cedar | 18 | 41.6K | $85,958 | View → |
| Hamilton | 15 | 38.7K | $78,158 | View → |
| Plymouth | 15 | 38.5K | $82,671 | View → |
| Winneshiek | 12 | 36.6K | $74,467 | View → |
| Jefferson | 16 | 35.9K | $64,455 | View → |
| Bremer | 13 | 35.2K | $84,390 | View → |
| Fayette | 24 | 35.1K | $67,177 | View → |
| Lee | 13 | 34.8K | $63,663 | View → |
| Poweshiek | 17 | 33.4K | $71,924 | View → |
| Jones | 17 | 32.9K | $77,673 | View → |
| Buchanan | 15 | 32.1K | $74,814 | View → |
| Adair | 14 | 31.5K | $71,148 | View → |
| Allamakee | 10 | 30.2K | $71,827 | View → |
| Shelby | 18 | 29.3K | $69,280 | View → |
| Delaware | 16 | 28.9K | $78,805 | View → |
| Clayton | 24 | 28.5K | $70,584 | View → |
| Sac | 16 | 28.2K | $71,804 | View → |
| Iowa | 21 | 27.7K | $71,965 | View → |
| Lyon | 12 | 27.3K | $75,240 | View → |
| Crawford | 21 | 26.6K | $68,923 | View → |
| Dickinson | 10 | 26.2K | $70,635 | View → |
| Chickasaw | 9 | 26K | $70,949 | View → |
| Carroll | 17 | 25.9K | $73,153 | View → |
| Buena Vista | 14 | 25.8K | $72,237 | View → |
| Henry | 12 | 25.6K | $72,366 | View → |
| Wright | 16 | 25.5K | $68,877 | View → |
| Page | 13 | 24K | $60,756 | View → |
| Guthrie | 17 | 23.9K | $71,959 | View → |
| Clay | 17 | 23.5K | $66,695 | View → |
| Jackson | 16 | 23.5K | $78,165 | View → |
| Franklin | 19 | 22.8K | $60,038 | View → |
| Floyd | 12 | 21.7K | $71,448 | View → |
| Audubon | 12 | 21.7K | $65,998 | View → |
| Greene | 13 | 21.7K | $69,063 | View → |
| Cherokee | 15 | 20.4K | $72,224 | View → |
| Kossuth | 20 | 20.3K | $67,760 | View → |
| Hardin | 13 | 19.4K | $68,492 | View → |
| Harrison | 15 | 19.2K | $78,869 | View → |
| O'Brien | 14 | 19.1K | $74,558 | View → |
| Hancock | 13 | 18.3K | $73,408 | View → |
| Humboldt | 17 | 18.3K | $69,820 | View → |
| Cass | 13 | 18.2K | $66,469 | View → |
| Adams | 10 | 17.6K | $62,883 | View → |
| Keokuk | 20 | 17.5K | $66,659 | View → |
| Taylor | 11 | 17.1K | $63,125 | View → |
| Union | 11 | 17K | $62,227 | View → |
| Mitchell | 12 | 16.6K | $76,147 | View → |
| Calhoun | 15 | 15.3K | $67,090 | View → |
| Wayne | 13 | 15K | $61,098 | View → |
| Appanoose | 11 | 14.6K | $57,633 | View → |
| Palo Alto | 14 | 14K | $69,359 | View → |
| Pocahontas | 16 | 13.9K | $68,364 | View → |
| Howard | 9 | 13.8K | $71,085 | View → |
| Monona | 15 | 13.8K | $71,675 | View → |
| Clarke | 9 | 13.7K | $73,896 | View → |
| Winnebago | 10 | 13.5K | $71,597 | View → |
| Davis | 10 | 13.5K | $71,631 | View → |
| Montgomery | 10 | 13.3K | $66,064 | View → |
| Worth | 10 | 13.2K | $80,257 | View → |
| Fremont | 11 | 12.7K | $70,442 | View → |
| Monroe | 7 | 12.5K | $72,018 | View → |
| Ida | 12 | 11.9K | $66,904 | View → |
| Lucas | 9 | 11.7K | $63,148 | View → |
| Emmet | 7 | 11.6K | $65,222 | View → |
| Ringgold | 12 | 10.5K | $69,507 | View → |
| Osceola | 8 | 10.4K | $68,601 | View → |
| Decatur | 11 | 9.9K | $58,429 | View → |
| Van Buren | 13 | 9.4K | $62,821 | View → |