Regional Capacity Analysis Program

Population under age 18

Table: AGE-5
1950-2000
Percentage of population

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County IDArea Name195019601970198019902000
19000Iowa30.1%34.8%33.5%27.3%24.9%24.1%
19001Adair County31.1%32.5%30.6%25.8%24.1%22.9%
19003Adams County32.0%33.6%29.9%25.4%23.4%22.9%
19005Allamakee County33.3%37.7%35.6%29.5%26.2%24.4%
19007Appanoose County29.7%29.1%28.4%26.5%24.2%22.7%
19009Audubon County32.1%36.0%34.0%26.6%24.5%24.9%
19011Benton County31.6%36.0%35.1%29.0%26.7%26.4%
19013Black Hawk County29.7%37.2%34.5%27.3%24.4%22.1%
19015Boone County28.7%32.3%30.7%24.9%23.5%23.8%
19017Bremer County30.9%33.9%32.9%28.3%24.3%23.1%
19019Buchanan County32.7%38.1%38.5%32.3%29.8%27.6%
19021Buena Vista County28.9%34.7%32.6%25.1%24.9%24.4%
19023Butler County31.7%34.8%33.0%28.1%25.4%23.4%
19025Calhoun County31.4%35.0%31.9%25.4%24.1%22.1%
19027Carroll County34.1%39.1%39.0%31.0%28.7%25.9%
19029Cass County29.5%32.3%31.1%25.7%24.6%22.8%
19031Cedar County29.8%35.3%33.5%28.2%26.0%24.3%
19033Cerro Gordo County29.8%35.1%32.3%24.8%23.8%22.8%
19035Cherokee County29.1%34.4%34.8%27.0%26.1%23.6%
19037Chickasaw County33.5%37.1%37.6%30.7%27.1%25.1%
19039Clarke County29.7%31.1%29.1%26.5%25.2%25.3%
19041Clay County31.3%36.6%33.5%27.5%26.3%23.7%
19043Clayton County31.2%35.2%34.3%28.6%26.9%24.4%
19045Clinton County29.7%35.2%35.0%28.8%25.7%24.6%
19047Crawford County32.8%35.9%35.2%29.6%26.5%25.5%
19049Dallas County29.6%33.8%33.8%28.8%26.8%27.2%
19051Davis County30.8%33.4%30.6%27.8%26.2%26.1%
19053Decatur County30.1%29.4%25.8%23.2%22.3%22.0%
19055Delaware County34.7%39.5%40.3%32.8%29.7%28.0%
19057Des Moines County28.1%33.5%32.5%27.3%24.7%23.4%
19059Dickinson County31.4%34.3%31.1%25.7%22.5%20.9%
19061Dubuque County30.3%37.2%38.8%31.0%26.1%24.6%
19063Emmet County33.0%37.9%33.9%27.9%25.6%23.2%
19065Fayette County31.7%35.4%34.3%28.3%25.5%24.0%
19067Floyd County31.6%35.0%33.4%28.4%24.9%24.1%
19069Franklin County31.6%33.9%31.2%25.8%24.7%23.2%
19071Fremont County31.2%32.2%30.4%26.2%25.1%24.1%
19073Greene County31.2%34.2%32.2%26.3%23.7%24.6%
19075Grundy County30.7%34.2%32.5%27.6%24.6%24.2%
19077Guthrie County31.5%33.2%30.8%25.7%23.9%22.6%
19079Hamilton County31.0%35.1%32.6%26.5%24.4%24.4%
19081Hancock County34.3%36.9%33.9%28.3%27.2%25.5%
19083Hardin County29.3%33.3%31.0%26.0%24.0%23.7%
19085Harrison County33.0%35.6%33.0%28.1%25.9%25.2%
19087Henry County26.3%29.9%30.5%26.1%24.2%23.7%
19089Howard County32.6%35.7%34.4%27.7%25.8%25.3%
19091Humboldt County32.7%36.6%35.0%26.5%24.5%23.9%
19093Ida County29.9%34.3%33.0%26.2%26.9%24.5%
19095Iowa County31.0%35.1%34.0%26.6%24.6%25.4%
19097Jackson County32.1%36.9%37.7%31.3%26.9%25.0%
19099Jasper County30.7%34.9%33.7%27.2%24.6%23.6%
19101Jefferson County28.6%31.3%29.0%23.9%23.4%23.4%
19103Johnson County24.1%30.2%27.7%21.0%19.1%19.1%
19105Jones County31.1%35.8%34.5%28.4%24.7%23.1%
19107Keokuk County29.8%33.6%32.1%26.1%25.0%24.7%
19109Kossuth County35.9%39.1%37.2%29.4%27.1%24.8%
19111Lee County28.9%33.8%32.7%27.2%24.8%23.4%
19113Linn County27.4%34.5%35.2%28.1%24.1%24.3%
19115Louisa County32.0%34.7%34.1%29.8%26.3%26.7%
19117Lucas County28.3%30.1%30.2%25.8%23.6%24.4%
19119Lyon County35.5%38.7%37.5%30.1%29.2%27.0%
19121Madison County31.4%33.0%31.0%28.2%26.6%26.1%
19123Mahaska County28.9%32.4%28.8%25.4%25.2%24.7%
19125Marion County28.6%31.6%29.8%26.6%24.6%24.3%
19127Marshall County29.0%33.5%33.0%27.1%24.1%24.3%
19129Mills County31.6%34.0%32.4%28.6%26.5%25.8%
19131Mitchell County32.7%37.6%36.1%27.8%25.1%25.5%
19133Monona County34.0%34.5%31.3%25.2%23.5%22.2%
19135Monroe County31.2%33.2%30.9%26.0%24.4%24.3%
19137Montgomery County29.2%31.9%29.1%24.9%23.6%24.0%
19139Muscatine County30.0%34.1%34.4%29.9%26.9%25.9%
19141O'Brien County32.0%35.9%34.0%26.5%25.7%23.8%
19143Osceola County34.0%37.8%35.1%27.8%26.2%25.1%
19145Page County26.7%29.1%27.1%25.0%24.0%22.3%
19147Palo Alto County35.5%38.7%35.2%27.7%25.7%23.0%
19149Plymouth County32.4%37.7%35.5%29.3%28.0%27.3%
19151Pocahontas County34.1%37.1%35.0%26.7%25.0%24.4%
19153Polk County28.0%34.1%33.1%26.5%24.1%24.7%
19155Pottawattamie County30.6%37.2%36.5%29.4%26.3%25.0%
19157Poweshiek County28.9%33.4%31.4%25.3%23.5%21.7%
19159Ringgold County30.9%32.7%28.0%23.7%22.9%23.0%
19161Sac County31.6%35.9%33.2%26.1%25.6%23.1%
19163Scott County28.4%35.4%36.2%29.8%26.9%25.5%
19165Shelby County34.3%38.7%37.6%29.5%26.1%25.4%
19167Sioux County35.5%39.1%36.0%29.9%28.9%26.1%
19169Story County26.3%30.3%26.0%19.8%18.8%18.1%
19171Tama County30.8%34.7%33.4%28.0%25.1%25.6%
19173Taylor County29.4%30.7%27.5%24.7%24.6%22.9%
19175Union County28.2%31.5%30.5%26.5%24.8%22.3%
19177Van Buren County29.5%31.5%30.3%27.2%25.3%23.8%
19179Wapello County30.7%33.9%31.2%25.3%23.0%22.3%
19181Warren County31.5%36.4%36.9%31.7%27.3%26.0%
19183Washington County31.2%35.1%33.6%27.7%25.8%25.1%
19185Wayne County27.8%28.8%26.4%23.1%22.4%22.9%
19187Webster County30.8%36.1%34.5%26.7%25.0%23.5%
19189Winnebago County32.4%33.9%30.2%25.6%24.5%23.1%
19191Winneshiek County31.2%34.7%33.1%26.5%23.6%22.0%
19193Woodbury County29.4%35.1%33.6%27.9%27.1%26.3%
19195Worth County32.7%35.2%31.2%25.4%23.8%23.3%
19197Wright County31.6%36.0%32.4%25.5%23.4%23.5%

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Source: "Population 18 Years and Older by County, Years 1950 to 2000," originated by Chris Kahle, Iowa Department of Natural Resources, Iowa Geological Survey, compiled from various U.S. Census Bureau sources.
Release Date: February 2003
Notes: These data show the population under 18 years of age as a percentage of the total population.