Iowa County Map
About the map
This Iowa county map displays its 99 counties. Despite having a relatively small population, Iowa has the ninth most counties out of all other states in America.
Polk County is the most populated in Iowa holding the state capital of Des Moines. Next, Linn, Scott, and Johnson counties have populations all over 150,000 people.
In terms of size, Kossuth County stands out occupying an area of 974.2 square miles. But the smallest county is Osceola County in northwest Iowa. Counties in Iowa have a very rectangular shape boundary and appearance.
 Iowa County Map – National Map |
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Iowa county list
| County Name | Population (2020 est) | County Map | Area (sq mi) | Locator Map | FIPS Code |
|---|---|---|---|---|---|
| Adair County | 7,059 |  | 570.3 |  | 19001 |
| Adams County | 3,588 |  | 425.5 |  | 19003 |
| Allamakee County | 13,642 |  | 658.8 |  | 19005 |
| Appanoose County | 12,430 |  | 516.2 |  | 19007 |
| Audubon County | 5,481 |  | 443.4 |  | 19009 |
| Benton County | 25,414 |  | 718.5 |  | 19011 |
| Black Hawk County | 130,786 |  | 572.7 |  | 19013 |
| Boone County | 26,277 |  | 573.6 |  | 19015 |
| Bremer County | 25,311 |  | 439.6 |  | 19017 |
| Buchanan County | 21,287 |  | 573.1 |  | 19019 |
| Buena Vista County | 19,772 |  | 580.3 |  | 19021 |
| Butler County | 14,333 |  | 581.5 |  | 19023 |
| Calhoun County | 9,473 |  | 572.1 |  | 19025 |
| Carroll County | 19,914 |  | 570.1 |  | 19027 |
| Cass County | 12,817 |  | 564.9 |  | 19029 |
| Cedar County | 18,485 |  | 581.9 |  | 19031 |
| Cerro Gordo County | 42,103 |  | 575.1 |  | 19033 |
| Cherokee County | 11,190 |  | 577.1 |  | 19035 |
| Chickasaw County | 11,834 |  | 505.7 |  | 19037 |
| Clarke County | 9,353 |  | 431.7 |  | 19039 |
| Clay County | 15,976 |  | 572.6 |  | 19041 |
| Clayton County | 17,321 |  | 792.8 |  | 19043 |
| Clinton County | 46,392 |  | 709.7 |  | 19045 |
| Crawford County | 16,834 |  | 715 |  | 19047 |
| Dallas County | 96,963 |  | 591.7 |  | 19049 |
| Davis County | 9,051 |  | 504.9 |  | 19051 |
| Decatur County | 7,769 |  | 533.5 |  | 19053 |
| Delaware County | 16,937 |  | 578.9 |  | 19055 |
| Des Moines County | 38,708 |  | 429.6 |  | 19057 |
| Dickinson County | 17,549 |  | 403.7 |  | 19059 |
| Dubuque County | 97,590 |  | 616.6 |  | 19061 |
| Emmet County | 9,095 |  | 402.3 |  | 19063 |
| Fayette County | 19,258 |  | 731.3 |  | 19065 |
| Floyd County | 15,480 |  | 501.4 |  | 19067 |
| Franklin County | 9,971 |  | 582.6 |  | 19069 |
| Fremont County | 6,729 |  | 516.6 |  | 19071 |
| Greene County | 8,795 |  | 571.3 |  | 19073 |
| Grundy County | 12,217 |  | 501.9 |  | 19075 |
| Guthrie County | 10,737 |  | 593.1 |  | 19077 |
| Hamilton County | 14,716 |  | 577.3 |  | 19079 |
| Hancock County | 10,507 |  | 573.1 |  | 19081 |
| Hardin County | 16,575 |  | 570.1 |  | 19083 |
| Harrison County | 13,928 |  | 700.9 |  | 19085 |
| Henry County | 19,697 |  | 436.6 |  | 19087 |
| Howard County | 9,176 |  | 473.6 |  | 19089 |
| Humboldt County | 9,473 |  | 435.7 |  | 19091 |
| Ida County | 6,833 |  | 432 |  | 19093 |
| Iowa County | 16,138 |  | 587.5 |  | 19095 |
| Jackson County | 19,205 |  | 649.6 |  | 19097 |
| Jasper County | 37,148 |  | 732.9 |  | 19099 |
| Jefferson County | 18,347 |  | 436.9 |  | 19101 |
| Johnson County | 153,740 |  | 623.3 |  | 19103 |
| Jones County | 20,617 |  | 577 |  | 19105 |
| Keokuk County | 10,085 |  | 579.9 |  | 19107 |
| Kossuth County | 14,680 |  | 974.2 |  | 19109 |
| Lee County | 33,480 |  | 539.8 |  | 19111 |
| Linn County | 227,854 |  | 724.5 |  | 19113 |
| Louisa County | 11,011 |  | 417.3 |  | 19115 |
| Lucas County | 8,518 |  | 434.4 |  | 19117 |
| Lyon County | 11,756 |  | 586.6 |  | 19119 |
| Madison County | 16,521 |  | 562.2 |  | 19121 |
| Mahaska County | 22,370 |  | 573.5 |  | 19123 |
| Marion County | 33,168 |  | 570.5 |  | 19125 |
| Marshall County | 39,495 |  | 573 |  | 19127 |
| Mills County | 14,766 |  | 440.7 |  | 19129 |
| Mitchell County | 10,647 |  | 469.5 |  | 19131 |
| Monona County | 8,598 |  | 698.9 |  | 19133 |
| Monroe County | 7,770 |  | 434.2 |  | 19135 |
| Montgomery County | 9,935 |  | 425 |  | 19137 |
| Muscatine County | 42,394 |  | 449.2 |  | 19139 |
| O’Brien County | 13,679 |  | 573.2 |  | 19141 |
| Osceola County | 5,987 |  | 399.7 |  | 19143 |
| Page County | 15,073 |  | 535.5 |  | 19145 |
| Palo Alto County | 8,845 |  | 569.4 |  | 19147 |
| Plymouth County | 25,219 |  | 861.7 |  | 19149 |
| Pocahontas County | 6,607 |  | 578.7 |  | 19151 |
| Polk County | 494,281 |  | 591.5 |  | 19153 |
| Pottawattamie County | 93,328 |  | 959.1 |  | 19155 |
| Poweshiek County | 18,381 |  | 586.1 |  | 19157 |
| Ringgold County | 4,801 |  | 538.9 |  | 19159 |
| Sac County | 9,603 |  | 578.3 |  | 19161 |
| Scott County | 173,216 |  | 468.6 |  | 19163 |
| Shelby County | 11,430 |  | 591.4 |  | 19165 |
| Sioux County | 35,043 |  | 768.6 |  | 19167 |
| Story County | 98,237 |  | 573.6 |  | 19169 |
| Tama County | 16,801 |  | 722.3 |  | 19171 |
| Taylor County | 6,092 |  | 534.7 |  | 19173 |
| Union County | 12,157 |  | 425.8 |  | 19175 |
| Van Buren County | 7,069 |  | 490.5 |  | 19177 |
| Wapello County | 34,985 |  | 436 |  | 19179 |
| Warren County | 52,265 |  | 573.3 |  | 19181 |
| Washington County | 21,992 |  | 570.8 |  | 19183 |
| Wayne County | 6,415 |  | 527.1 |  | 19185 |
| Webster County | 35,934 |  | 718.4 |  | 19187 |
| Winnebago County | 10,277 |  | 401.6 |  | 19189 |
| Winneshiek County | 19,862 |  | 690.1 |  | 19191 |
| Woodbury County | 103,138 |  | 878.1 |  | 19193 |
| Worth County | 7,359 |  | 402 |  | 19195 |
| Wright County | 12,416 |  | 582.3 |  | 19197 |
