Iowa: Attic Insulation Payback by County

Iowa: 99 counties covered

Iowa spans DOE climate zones 5, 6. Across its 99 counties tracked here, an uninsulated attic saves an estimated $1,985/year on average once topped up to the recommended R-value — actual savings depend on each county's own heating and cooling degree days, shown below.

• Worth County — zone 6, ~$2,303/yr
• Osceola County — zone 6, ~$2,244/yr
• Emmet County — zone 6, ~$2,207/yr
• Winnebago County — zone 6, ~$2,195/yr
• Howard County — zone 6, ~$2,191/yr
• Chickasaw County — zone 6, ~$2,189/yr
• Hancock County — zone 6, ~$2,169/yr
• Mitchell County — zone 6, ~$2,166/yr
• Fayette County — zone 6, ~$2,161/yr
• Lyon County — zone 6, ~$2,160/yr
• Cerro Gordo County — zone 6, ~$2,142/yr
• Allamakee County — zone 6, ~$2,139/yr
• Clay County — zone 6, ~$2,136/yr
• Dickinson County — zone 6, ~$2,134/yr
• Kossuth County — zone 6, ~$2,131/yr
• Clayton County — zone 6, ~$2,102/yr
• Cherokee County — zone 6, ~$2,101/yr
• Bremer County — zone 6, ~$2,098/yr
• Hamilton County — zone 6, ~$2,093/yr
• Pocahontas County — zone 6, ~$2,090/yr
• Webster County — zone 6, ~$2,084/yr
• Franklin County — zone 6, ~$2,083/yr
• Wright County — zone 6, ~$2,083/yr
• Butler County — zone 6, ~$2,082/yr
• Sac County — zone 6, ~$2,081/yr
• Plymouth County — zone 6, ~$2,077/yr
• Benton County — zone 5, ~$2,076/yr
• Delaware County — zone 6, ~$2,076/yr
• Floyd County — zone 6, ~$2,072/yr
• Palo Alto County — zone 6, ~$2,071/yr
• Humboldt County — zone 6, ~$2,068/yr
• Hardin County — zone 6, ~$2,060/yr
• Buchanan County — zone 6, ~$2,055/yr
• Buena Vista County — zone 6, ~$2,054/yr
• Grundy County — zone 6, ~$2,050/yr
• Ida County — zone 6, ~$2,041/yr
• Calhoun County — zone 6, ~$2,039/yr
• Jones County — zone 5, ~$2,029/yr
• Audubon County — zone 5, ~$2,025/yr
• Crawford County — zone 6, ~$2,023/yr
• Tama County — zone 5, ~$2,016/yr
• O'Brien County — zone 6, ~$2,012/yr
• Marshall County — zone 5, ~$2,008/yr
• Woodbury County — zone 5, ~$2,008/yr
• Sioux County — zone 6, ~$2,002/yr
• Story County — zone 5, ~$2,002/yr
• Dubuque County — zone 5, ~$1,997/yr
• Greene County — zone 5, ~$1,996/yr
• Poweshiek County — zone 5, ~$1,993/yr
• Carroll County — zone 5, ~$1,990/yr
• Boone County — zone 5, ~$1,979/yr
• Clinton County — zone 5, ~$1,975/yr
• Jackson County — zone 5, ~$1,975/yr
• Monona County — zone 5, ~$1,968/yr
• Guthrie County — zone 5, ~$1,967/yr
• Iowa County — zone 5, ~$1,962/yr
• Jasper County — zone 5, ~$1,957/yr
• Madison County — zone 5, ~$1,955/yr
• Winneshiek County — zone 6, ~$1,950/yr
• Dallas County — zone 5, ~$1,946/yr
• Black Hawk County — zone 6, ~$1,943/yr
• Harrison County — zone 5, ~$1,942/yr
• Lucas County — zone 5, ~$1,936/yr
• Cass County — zone 5, ~$1,926/yr
• Union County — zone 5, ~$1,924/yr
• Adair County — zone 5, ~$1,912/yr
• Shelby County — zone 5, ~$1,909/yr
• Louisa County — zone 5, ~$1,908/yr
• Keokuk County — zone 5, ~$1,905/yr
• Polk County — zone 5, ~$1,904/yr
• Cedar County — zone 5, ~$1,899/yr
• Pottawattamie County — zone 5, ~$1,899/yr
• Washington County — zone 5, ~$1,887/yr
• Adams County — zone 5, ~$1,878/yr
• Clarke County — zone 5, ~$1,874/yr
• Marion County — zone 5, ~$1,868/yr
• Warren County — zone 5, ~$1,866/yr
• Mahaska County — zone 5, ~$1,856/yr
• Ringgold County — zone 5, ~$1,856/yr
• Linn County — zone 5, ~$1,854/yr
• Decatur County — zone 5, ~$1,845/yr
• Taylor County — zone 5, ~$1,842/yr
• Wayne County — zone 5, ~$1,842/yr
• Jefferson County — zone 5, ~$1,840/yr
• Monroe County — zone 5, ~$1,839/yr
• Henry County — zone 5, ~$1,837/yr
• Page County — zone 5, ~$1,837/yr
• Appanoose County — zone 5, ~$1,834/yr
• Scott County — zone 5, ~$1,833/yr
• Montgomery County — zone 5, ~$1,829/yr
• Mills County — zone 5, ~$1,826/yr
• Muscatine County — zone 5, ~$1,824/yr
• Fremont County — zone 5, ~$1,813/yr
• Van Buren County — zone 5, ~$1,810/yr
• Johnson County — zone 5, ~$1,803/yr
• Wapello County — zone 5, ~$1,801/yr
• Davis County — zone 5, ~$1,781/yr
• Lee County — zone 5, ~$1,755/yr
• Des Moines County — zone 5, ~$1,743/yr