Regional Capacity Analysis Program

Population age 65 and older

Table: AGE-6
1930-2000
Percentage of population

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County IDArea Name19301940195019601970198019902000
19000Iowa6.5%8.0%9.4%10.9%11.4%12.3%14.3%13.9%
19001Adair County7.0%8.6%10.2%13.9%15.9%18.7%22.6%21.1%
19003Adams County6.6%8.2%10.8%13.9%16.0%17.8%20.7%20.4%
19005Allamakee County8.6%9.6%11.0%12.7%15.0%16.0%18.5%17.4%
19007Appanoose County7.4%9.3%13.6%18.3%17.9%17.6%20.4%19.0%
19009Audubon County5.3%6.9%8.9%12.1%14.5%17.6%22.1%22.5%
19011Benton County6.8%8.5%9.9%11.5%12.3%13.6%15.6%14.4%
19013Black Hawk County5.2%6.3%7.1%7.7%8.1%9.2%12.6%13.0%
19015Boone County6.8%8.7%11.1%13.7%15.2%15.4%17.0%15.4%
19017Bremer County7.1%8.8%9.8%10.3%11.1%12.1%15.7%15.0%
19019Buchanan County8.9%10.7%10.7%10.7%10.5%11.2%14.6%13.5%
19021Buena Vista County6.2%7.4%9.7%12.2%13.8%15.3%16.9%15.9%
19023Butler County6.6%8.3%9.9%11.7%13.4%15.5%19.5%19.1%
19025Calhoun County6.5%7.6%10.1%12.8%16.2%18.6%22.7%21.1%
19027Carroll County5.6%6.5%8.3%10.7%12.3%13.8%16.8%17.7%
19029Cass County7.2%8.5%11.3%13.8%16.2%17.8%19.9%19.8%
19031Cedar County7.7%9.1%10.7%11.8%13.0%13.6%15.9%15.2%
19033Cerro Gordo County5.1%6.3%8.5%10.8%11.8%13.4%15.9%16.7%
19035Cherokee County6.5%7.9%10.2%12.2%12.6%14.6%17.5%19.4%
19037Chickasaw County7.5%8.7%10.1%11.5%12.5%13.5%16.8%16.9%
19039Clarke County7.7%10.2%12.7%15.8%16.8%16.1%17.6%16.1%
19041Clay County5.3%6.6%8.3%10.4%12.1%12.7%15.5%17.0%
19043Clayton County7.5%9.1%10.5%12.5%13.9%15.3%17.1%17.5%
19045Clinton County7.3%8.7%9.1%10.4%10.5%11.9%15.0%14.8%
19047Crawford County5.7%6.4%8.5%11.8%12.1%13.0%16.4%16.1%
19049Dallas County7.0%8.7%11.3%13.6%12.6%12.0%13.6%10.1%
19051Davis County9.4%10.1%12.6%13.8%15.8%16.1%17.7%16.4%
19053Decatur County8.8%10.8%12.7%15.6%17.1%17.3%19.5%16.7%
19055Delaware County6.7%8.3%9.2%10.5%11.0%11.5%13.7%14.0%
19057Des Moines County8.1%10.1%9.7%11.3%12.2%13.1%15.2%15.7%
19059Dickinson County5.7%6.8%8.7%12.3%14.2%15.2%19.8%19.6%
19061Dubuque County6.7%8.3%8.9%9.3%9.0%10.1%13.1%13.7%
19063Emmet County4.6%7.0%8.4%10.4%12.2%13.7%17.9%18.4%
19065Fayette County7.0%8.4%10.0%11.5%13.4%15.3%18.2%18.0%
19067Floyd County6.8%8.2%9.9%12.2%12.7%14.4%18.6%18.2%
19069Franklin County4.9%6.8%8.2%11.4%14.8%16.2%19.0%19.5%
19071Fremont County6.6%8.7%11.0%13.7%15.8%17.5%20.6%18.8%
19073Greene County6.5%7.9%10.1%13.2%15.6%18.1%21.5%20.6%
19075Grundy County4.8%7.2%9.2%11.1%12.2%14.6%19.0%18.3%
19077Guthrie County7.6%8.6%11.4%14.8%17.5%18.8%20.0%19.5%
19079Hamilton County5.8%7.3%9.4%11.1%12.7%14.4%17.5%17.0%
19081Hancock County4.8%6.4%8.0%10.4%13.6%14.4%17.1%16.9%
19083Hardin County7.0%8.7%10.8%13.6%14.8%16.2%20.2%19.7%
19085Harrison County6.0%7.8%10.4%13.3%15.4%16.2%18.5%16.7%
19087Henry County10.2%12.5%13.6%15.4%13.3%14.3%15.5%13.7%
19089Howard County7.6%9.0%10.7%12.8%15.3%18.2%20.6%19.1%
19091Humboldt County5.7%7.2%9.2%11.2%12.7%15.5%20.0%20.0%
19093Ida County5.4%6.8%8.7%13.3%14.7%17.2%19.3%20.8%
19095Iowa County6.8%9.2%10.8%11.4%12.9%15.4%17.8%16.1%
19097Jackson County8.2%9.3%10.8%11.0%12.0%12.8%15.6%16.3%
19099Jasper County5.6%7.6%8.8%10.0%10.8%12.6%14.9%15.0%
19101Jefferson County7.8%9.5%11.4%13.0%13.3%14.0%13.7%12.8%
19103Johnson County6.4%8.2%6.8%7.3%6.0%6.1%6.4%6.4%
19105Jones County6.9%8.3%9.3%10.5%11.4%12.5%14.9%14.8%
19107Keokuk County9.0%10.6%13.9%15.3%16.9%19.0%19.7%19.2%
19109Kossuth County4.8%5.9%7.4%9.1%11.9%14.1%18.0%19.1%
19111Lee County7.3%8.9%9.6%11.2%11.8%12.7%15.7%15.5%
19113Linn County6.5%7.8%9.2%8.9%8.1%9.1%11.1%11.2%
19115Louisa County8.3%10.3%10.8%12.4%13.1%12.8%14.0%13.1%
19117Lucas County7.7%9.6%14.1%16.8%17.2%17.4%19.7%18.3%
19119Lyon County4.9%5.9%7.0%9.2%12.2%14.3%17.0%17.8%
19121Madison County8.4%9.4%11.6%14.8%16.0%16.1%17.0%14.2%
19123Mahaska County8.1%10.0%11.5%13.6%15.3%15.1%16.7%15.3%
19125Marion County7.1%8.6%10.4%13.7%14.0%13.4%15.1%14.9%
19127Marshall County7.2%8.1%10.1%11.6%11.3%12.9%16.5%15.4%
19129Mills County5.7%7.4%9.4%10.5%12.0%11.7%12.7%11.6%
19131Mitchell County7.6%9.1%11.0%12.2%15.1%17.7%20.8%20.6%
19133Monona County5.2%6.9%9.2%12.9%15.9%19.1%22.7%22.9%
19135Monroe County8.4%9.6%12.9%15.3%17.7%17.4%19.6%18.5%
19137Montgomery County7.7%9.4%12.0%15.5%18.0%18.7%20.8%19.3%
19139Muscatine County8.3%9.2%11.0%12.4%11.3%11.1%12.4%11.9%
19141O'Brien County6.5%7.7%8.7%12.1%14.9%16.6%19.6%20.1%
19143Osceola County4.6%5.3%6.8%9.8%14.0%16.2%18.3%17.9%
19145Page County8.2%9.9%12.7%15.6%17.7%18.1%19.9%18.8%
19147Palo Alto County5.0%6.5%7.6%10.5%13.7%16.0%19.5%20.3%
19149Plymouth County5.7%6.7%8.0%10.5%11.2%13.4%15.3%15.0%
19151Pocahontas County5.0%6.4%7.7%11.4%14.7%17.4%20.8%20.7%
19153Polk County5.0%6.5%8.0%8.7%8.8%9.4%10.5%10.1%
19155Pottawattamie County5.2%7.3%8.6%8.9%9.6%10.6%12.4%12.7%
19157Poweshiek County7.5%9.6%10.4%11.9%12.5%13.9%15.7%16.6%
19159Ringgold County7.5%9.9%12.6%14.8%18.1%20.2%23.2%23.0%
19161Sac County6.0%6.9%9.5%12.6%15.2%17.9%20.9%21.7%
19163Scott County6.0%7.5%7.9%8.8%8.1%7.9%10.5%10.8%
19165Shelby County5.2%6.0%8.3%11.7%13.0%15.1%19.4%19.4%
19167Sioux County4.7%5.9%7.5%9.5%10.8%11.7%13.7%14.0%
19169Story County6.3%7.5%7.4%8.9%7.3%7.3%8.6%8.8%
19171Tama County6.7%8.3%10.7%12.9%14.4%16.0%18.4%17.7%
19173Taylor County8.4%10.5%14.2%17.6%20.3%20.3%23.1%21.4%
19175Union County7.7%10.6%13.0%16.3%17.1%16.9%18.3%17.7%
19177Van Buren County10.7%12.4%15.0%15.9%17.6%17.7%19.4%18.1%
19179Wapello County6.8%8.0%9.0%11.2%13.7%15.9%17.7%16.8%
19181Warren County8.2%9.9%10.4%10.3%8.2%8.2%9.9%10.8%
19183Washington County8.4%10.1%11.9%13.5%14.6%15.3%17.6%16.9%
19185Wayne County8.4%11.8%14.5%18.1%20.9%21.9%25.3%22.8%
19187Webster County5.0%6.7%8.7%10.6%11.5%13.7%16.6%16.4%
19189Winnebago County5.9%7.3%9.2%11.5%14.1%16.7%18.1%17.9%
19191Winneshiek County7.7%9.2%9.8%10.7%12.5%13.1%14.4%14.7%
19193Woodbury County4.5%6.3%8.2%10.5%11.5%12.3%13.7%12.4%
19195Worth County5.4%7.2%9.3%11.2%15.3%17.7%19.9%18.4%
19197Wright County5.8%7.2%9.6%11.7%14.2%17.1%21.1%20.2%

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Source: "Population by Selected Age Groups by County, Years 1930 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 age 65 years and older as a percentage of the total population.