Demographic Data Report for Iowa by County Population: Age 18-39 "All Races (includes Hispanic), Both Sexes" 2017-2021 American Community Survey 5-Year Data Sorted by Value County, FIPS,Value (Percent),People (Age 18-39),Rank within US "United States",00000,29.6,97620321,"N/A" "Iowa",19000,28.9,918856,"20 of 52" "Story County",19169,49.1,48147,"3133 of 3143" "Johnson County",19103,42.4,64319,"3101 of 3143" "Black Hawk County",19013,33.8,44370,"2937 of 3143" "Decatur County",19053,32.3,2496,"2859 of 3143" "Polk County",19153,31.2,152650,"2770 of 3143" "Dallas County",19049,30.5,29426,"2689 of 3143" "Winneshiek County",19191,29.8,5995,"2599 of 3143" "Sioux County",19167,29.7,10594,"2573 of 3143" "Webster County",19187,29.7,11027,"2570 of 3143" "Buena Vista County",19021,29.4,6099,"2534 of 3143" "Linn County",19113,29.3,67030,"2513 of 3143" "Poweshiek County",19157,29.1,5414,"2470 of 3143" "Woodbury County",19193,28.9,30394,"2436 of 3143" "Dubuque County",19061,28.9,28501,"2428 of 3143" "Crawford County",19047,28.6,4729,"2363 of 3143" "Bremer County",19017,28.5,7080,"2346 of 3143" "Scott County",19163,28.0,48729,"2248 of 3143" "Union County",19175,27.9,3400,"2225 of 3143" "Muscatine County",19139,27.6,11912,"2155 of 3143" "Henry County",19087,27.6,5655,"2151 of 3143" "Mahaska County",19123,27.5,6078,"2130 of 3143" "Wapello County",19179,27.4,9680,"2104 of 3143" "Warren County",19181,27.2,14120,"2056 of 3143" "Marion County",19125,27.1,9036,"2005 of 3143" "Pottawattamie County",19155,27.0,25221,"1968 of 3143" "Jefferson County",19101,26.9,4262,"1948 of 3143" "Winnebago County",19189,26.6,2855,"1847 of 3143" "Jasper County",19099,26.5,9970,"1809 of 3143" "Emmet County",19063,26.4,2493,"1800 of 3143" "Marshall County",19127,26.2,10530,"1723 of 3143" "Clarke County",19039,26.2,2546,"1695 of 3143" "Fayette County",19065,25.7,5041,"1557 of 3143" "Boone County",19015,25.7,6876,"1553 of 3143" "Clay County",19041,25.2,4129,"1365 of 3143" "Davis County",19051,25.2,2281,"1364 of 3143" "O'Brien County",19141,25.0,3533,"1309 of 3143" "Cedar County",19031,25.0,4621,"1308 of 3143" "Page County",19145,24.9,3804,"1286 of 3143" "Washington County",19183,24.8,5589,"1236 of 3143" "Hardin County",19083,24.8,4209,"1217 of 3143" "Buchanan County",19019,24.7,5084,"1181 of 3143" "Louisa County",19115,24.6,2683,"1168 of 3143" "Cerro Gordo County",19033,24.6,10633,"1164 of 3143" "Worth County",19195,24.6,1834,"1160 of 3143" "Adair County",19001,24.6,1829,"1148 of 3143" "Calhoun County",19025,24.6,2446,"1138 of 3143" "Lee County",19111,24.5,8267,"1122 of 3143" "Clinton County",19045,24.4,11364,"1070 of 3143" "Plymouth County",19149,24.3,6213,"1052 of 3143" "Des Moines County",19057,24.3,9498,"1045 of 3143" "Harrison County",19085,24.1,3522,"993 of 3143" "Jones County",19105,24.1,4984,"985 of 3143" "Tama County",19171,24.1,4114,"981 of 3143" "Lyon County",19119,24.1,2877,"969 of 3143" "Palo Alto County",19147,24.1,2164,"960 of 3143" "Monroe County",19135,24.0,1823,"954 of 3143" "Howard County",19089,24.0,2271,"951 of 3143" "Humboldt County",19091,23.9,2296,"914 of 3143" "Jackson County",19097,23.8,4642,"902 of 3143" "Hamilton County",19079,23.8,3588,"901 of 3143" "Mills County",19129,23.8,3488,"898 of 3143" "Madison County",19121,23.8,3901,"887 of 3143" "Shelby County",19165,23.8,2792,"885 of 3143" "Carroll County",19027,23.7,4921,"870 of 3143" "Ida County",19093,23.7,1654,"868 of 3143" "Floyd County",19067,23.5,3680,"802 of 3143" "Appanoose County",19007,23.4,2885,"793 of 3143" "Grundy County",19075,23.4,2890,"789 of 3143" "Lucas County",19117,23.4,2024,"778 of 3143" "Kossuth County",19109,23.4,3464,"763 of 3143" "Hancock County",19081,23.2,2518,"723 of 3143" "Benton County",19011,23.2,5950,"710 of 3143" "Mitchell County",19131,23.2,2437,"702 of 3143" "Montgomery County",19137,23.1,2386,"684 of 3143" "Iowa County",19095,23.1,3827,"675 of 3143" "Keokuk County",19107,23.0,2315,"668 of 3143" "Taylor County",19173,22.9,1356,"622 of 3143" "Greene County",19073,22.7,2006,"590 of 3143" "Chickasaw County",19037,22.7,2729,"584 of 3143" "Adams County",19003,22.7,838,"580 of 3143" "Butler County",19023,22.6,3257,"556 of 3143" "Pocahontas County",19151,22.5,1596,"536 of 3143" "Wright County",19197,22.5,2916,"524 of 3143" "Wayne County",19185,22.5,1461,"523 of 3143" "Franklin County",19069,22.2,2232,"475 of 3143" "Allamakee County",19005,22.2,3121,"472 of 3143" "Monona County",19133,22.0,1920,"436 of 3143" "Ringgold County",19159,22.0,1042,"435 of 3143" "Osceola County",19143,22.0,1356,"434 of 3143" "Clayton County",19043,21.8,3744,"403 of 3143" "Dickinson County",19059,21.7,3797,"375 of 3143" "Sac County",19161,21.6,2123,"363 of 3143" "Delaware County",19055,21.5,3764,"343 of 3143" "Cass County",19029,21.2,2788,"306 of 3143" "Fremont County",19071,21.1,1411,"288 of 3143" "Van Buren County",19177,21.1,1515,"288 of 3143" "Audubon County",19009,21.0,1187,"280 of 3143" "Guthrie County",19077,20.8,2208,"256 of 3143" "Cherokee County",19035,20.5,2384,"217 of 3143" Created by statecancerprofiles.cancer.gov on 03/29/2024 3:00 am. Source: Demographic data provided by the Census Bureau (http://www.census.gov/) & the American Community Survey (http://www.census.gov/acs/www/). "For more information about Population: Age 18-39, see the dictionary at http://statecancerprofiles.cancer.gov/dictionary.php#population." Data for United States does not include Puerto Rico.