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Editor: Katerine G., Editor & Data Researcher · Research & publishing: Electric Consumer Editorial Team · Data retrieved · Sources named on this page: EIA-861, Census ACS, DOE LEAD, FEMA National Risk Index, OpenFEMA NFIP · How we got these numbers · Report an error

Counties in Iowa ranked

5.6%of income goes to home energy in Adair County, the highest of 99 Iowa counties

Dallas County is lowest at 1.6%, a gap of 3.5 times. The median Iowa county sits at 3.9%, against 3.3% for the median U.S. county. Source for Iowa: DOE LEAD 2022.

Iowa county map

Iowa counties, shaded by quintile of the selected measureMarshall County: 3.9%Cherokee County: 3.3%Madison County: 3.7%Grundy County: 3.9%Floyd County: 3.7%Wright County: 3.8%Clay County: 3.8%Adair County: 5.6%Clarke County: 4.2%Muscatine County: 3.2%Jones County: 4.0%Mahaska County: 3.5%Johnson County: 1.6%Story County: 2.4%Wapello County: 3.9%Kossuth County: 5.4%Jasper County: 3.2%Monroe County: 4.3%Shelby County: 4.4%Worth County: 4.2%Buena Vista County: 3.0%Delaware County: 3.7%Hamilton County: 4.6%Jefferson County: 4.2%Poweshiek County: 3.8%Cedar County: 3.9%Henry County: 4.2%Boone County: 3.4%Greene County: 4.6%Humboldt County: 3.5%Bremer County: 3.7%Osceola County: 5.6%Benton County: 3.5%Louisa County: 4.3%Cerro Gordo County: 3.5%Palo Alto County: 3.8%Montgomery County: 3.4%Ida County: 3.6%Hardin County: 4.4%Tama County: 4.5%Taylor County: 4.5%Audubon County: 5.3%Emmet County: 4.7%Lucas County: 5.0%Chickasaw County: 4.4%Franklin County: 4.7%Union County: 4.4%Iowa County: 3.8%Cass County: 4.6%Davis County: 4.3%Linn County: 2.3%Polk County: 1.7%Crawford County: 4.8%Marion County: 3.6%Scott County: 2.0%Lee County: 3.7%Buchanan County: 3.4%Webster County: 3.1%Winneshiek County: 4.2%Clinton County: 3.7%Dickinson County: 3.0%Winnebago County: 4.7%Harrison County: 4.3%Decatur County: 5.4%Adams County: 3.9%Woodbury County: 2.5%Washington County: 3.7%Calhoun County: 4.0%Ringgold County: 4.4%Dallas County: 1.6%Van Buren County: 5.5%Black Hawk County: 2.2%Dubuque County: 3.0%Fayette County: 4.7%Clayton County: 4.5%Mills County: 2.5%Sac County: 3.5%Sioux County: 3.3%Wayne County: 5.1%Mitchell County: 4.7%Keokuk County: 5.0%Plymouth County: 2.7%Jackson County: 3.7%Pottawattamie County: 2.5%Pocahontas County: 4.5%Fremont County: 3.6%Warren County: 2.7%Hancock County: 4.2%O'Brien County: 3.3%Allamakee County: 4.8%Lyon County: 5.2%Butler County: 3.9%Monona County: 3.9%Carroll County: 4.0%Appanoose County: 4.9%Page County: 3.6%Howard County: 5.1%Des Moines County: 3.8%Guthrie County: 4.6%
  • 1.6% to 3.3%
  • 3.3% to 3.7%
  • 3.7% to 4.2%
  • 4.2% to 4.6%
  • 4.6% to 5.6%

Iowa counties, darker = higher. Click one for its page.

Highest energy burden in Iowa

Adair County leads Iowa on burden at 5.6% of income and Osceola County follows at 5.6%. For lower-income homes the top is Osceola County: 17.2% of income, against 11.4% in the median Iowa county.

home energy burden, % of income, top 10 Iowa counties

  • Adair County5.6
  • Osceola County5.6
  • Van Buren County5.5
  • Kossuth County5.4
  • Decatur County5.4
  • Audubon County5.3
  • Lyon County5.2
  • Wayne County5.1
  • Howard County5.1
  • Lucas County5.0
  • Iowa median county3.9
Iowa counties with the lowest home energy burden
Lowest burden in IowaShare of income (IA)Residents (IA)
Dallas County1.6%104,136
Johnson County1.6%154,881
Polk County1.7%497,441
Scott County2.0%174,302
Black Hawk County2.2%130,693

Storm reports and FEMA risk in Iowa

NOAA logged 124 damaging-wind, tornado, tropical, ice, winter and heat reports in Osceola County from 2015 to 2025, 2,028 for every 100,000 residents: the most in Iowa. FEMA scores Polk County highest at 92.0 (relatively moderate). In Iowa these are weather reports and an index, not outage counts.

Iowa top 5: Storm reports per 100,000 residents
Top 5 in Iowareports 2015-2025 (IA)Residents (IA)Rank (IA)
Osceola County2,0286,1141st
Ida County1,3106,9442nd
Emmet County1,1069,3163rd
Worth County1,0847,3804th
Pocahontas County1,0517,0405th
Iowa top 5: FEMA risk score
Top 5 in Iowascore 0-100 (IA)Residents (IA)Rank (IA)
Polk County92.0497,4411st
Johnson County87.4154,8812nd
Linn County86.7229,4633rd
Scott County84.9174,3024th
Woodbury County83.3105,7605th

Flood claims and flood insurance in Iowa

Fremont County has the most NFIP flood claims per 1,000 homes in Iowa: 25.2 from 2015 to 2025, against 1.9 in the median Iowa county. Harrison County has the highest share of homes with flood insurance (2.0%, median county 0.3%). Claims are a record of insured losses, not outage counts.

Iowa top 5: Flood claims per 1,000 homes
Top 5 in Iowaclaims 2015-2025 (IA)Residents (IA)Rank (IA)
Fremont County25.26,5701st
Butler County9.014,3012nd
Clay County8.716,4463rd
Cherokee County5.911,5874th
Floyd County5.815,5025th
Iowa top 5: Flood insurance penetration
Top 5 in Iowa% of homes insured (IA)Residents (IA)Rank (IA)
Harrison County2.0%14,6451st
Clay County1.8%16,4462nd
Louisa County1.6%10,7103rd
Butler County1.4%14,3014th
Pottawattamie County1.3%93,4075th

FEMA OpenFEMA NFIP, as of 8 Sep 2026. Flood claims by county.

Outliers: Iowa counties far from the state median

10 county-measure pairs sit 3 or more scaled median-absolute-deviation units from the Iowa median. Most extreme: Fremont County, flood claims per 1,000 homes 25.2 against a median of 1.9.

Iowa outliers by deviation from the state median
CountyMeasureValueIowa medianDeviations
Fremont CountyFlood claims per 1,000 homes25.21.9+12.9
Harrison CountyFlood insurance penetration2.0%0.3%+5.2
Dallas CountyHomes built before 198023%72%-4.9
Clay CountyFlood insurance penetration1.8%0.3%+4.5
Osceola CountyStorm reports per 100,000 residents2,028567+4.2
Butler CountyFlood claims per 1,000 homes9.01.9+3.9
Louisa CountyFlood insurance penetration1.6%0.3%+3.8
Clay CountyFlood claims per 1,000 homes8.71.9+3.7
Johnson CountyHomes built before 198038%72%-3.5
Butler CountyFlood insurance penetration1.4%0.3%+3.4

Old homes, electric heat and utilities in Iowa

Franklin County has the oldest stock: 87% of homes date from before 1980. Electric heat is most common in Crawford County at 44% of homes, and Kossuth County lists 7 utilities, the most in Iowa.

Iowa top 5: Homes built before 1980
Top 5 in Iowa% of homes (IA)Residents (IA)Rank (IA)
Franklin County87%9,9771st
Emmet County87%9,3162nd
Pocahontas County86%7,0403rd
Cherokee County86%11,5874th
Audubon County84%5,6225th
Iowa top 5: Homes heated by electricity
Top 5 in Iowa% of homes (IA)Residents (IA)Rank (IA)
Crawford County44%16,2891st
Sioux County38%35,9842nd
Ida County38%6,9443rd
Plymouth County37%25,6994th
Clarke County36%9,6905th

Find your Iowa county

  • Pick a Iowa county to see its ranks.

All 99 Iowa counties, sortable

99 Iowa counties, all measures
Adair County7,4715.6%15.7%1,01749.577%21%2no datano data76
Adams County3,6413.9%11.8%under 5,000 residents20.474%27%2no data0.1%42
Allamakee County14,0384.8%13.9%44238.261%15%20.90.4%62
Appanoose County12,2424.9%11.9%44941.272%30%1no data0.0%55
Audubon County5,6225.3%14.7%87238.684%27%1no datano data49
Benton County25,6983.5%12.1%44028.865%20%32.60.6%113
Black Hawk County130,6932.2%6.7%8676.671%30%44.81.0%113
Boone County26,6693.4%9.9%30728.472%19%20.60.2%82
Bremer County25,1183.7%12.5%29124.668%18%44.91.1%73
Buchanan County20,6453.4%10.8%72724.065%22%53.20.8%150
Buena Vista County20,6843.0%7.5%56639.372%32%3no data0.1%117
Butler County14,3013.9%11.3%63627.175%23%49.01.4%91
Calhoun County9,8584.0%11.3%87244.681%24%2no data0.1%86
Carroll County20,6774.0%10.9%47957.672%24%2no data0.2%99
Cass County13,1154.6%13.1%63360.181%24%2no data0.3%83
Cedar County18,4273.9%11.1%61921.570%12%41.10.3%114
Cerro Gordo County42,7853.5%9.7%32069.676%17%50.60.3%137
Cherokee County11,5873.3%9.1%94934.186%27%45.90.8%110
Chickasaw County11,8684.4%13.8%62431.773%16%54.00.6%74
Clarke County9,6904.2%11.9%64018.464%36%1no datano data62
Clay County16,4463.8%10.5%82136.471%36%38.71.8%135
Clayton County17,0694.5%13.4%57442.268%16%33.70.9%98
Clinton County46,3833.7%10.0%29364.877%18%51.80.5%136
Crawford County16,2894.8%12.4%43660.879%44%2no data0.0%71
Dallas County104,1361.6%6.4%13160.623%32%30.30.2%136
Davis County9,1274.3%13.6%39450.366%14%2no datano data36
Decatur County7,6695.4%12.9%66523.662%27%1no datano data51
Delaware County17,5493.7%11.7%60449.768%11%31.90.7%106
Des Moines County38,5973.8%11.0%31655.875%20%35.40.6%122
Dickinson County17,8443.0%9.6%86336.354%25%30.80.2%154
Dubuque County98,9483.0%10.2%16663.664%16%20.70.2%164
Emmet County9,3164.7%12.5%1,10642.787%14%30.80.2%103
Fayette County19,3934.7%13.8%42850.975%15%42.20.4%83
Floyd County15,5023.7%10.2%81347.783%22%45.81.1%126
Franklin County9,9774.7%13.3%86221.987%27%5no data0.2%86
Fremont County6,5703.6%9.9%1,02015.076%14%125.21.3%67
Greene County8,7224.6%12.1%80331.879%23%2no data0.0%70
Grundy County12,3523.9%12.4%56713.176%18%3no data0.1%70
Guthrie County10,6464.6%16.3%75126.565%19%2no data0.2%80
Hamilton County14,8934.6%12.7%52442.978%16%4no data0.1%78
Hancock County10,7184.2%12.8%89628.878%17%3no data0.1%96
Hardin County16,7294.4%12.1%64658.483%16%40.60.3%108
Harrison County14,6454.3%11.9%66231.373%33%12.62.0%97
Henry County20,2284.2%11.4%38630.969%20%3no datano data78
Howard County9,4595.1%16.3%87715.677%11%31.30.3%83
Humboldt County9,5733.5%10.3%85724.180%25%3no data0.3%82
Ida County6,9443.6%10.0%1,31018.483%38%3no data0.2%91
Iowa County16,5473.8%11.6%45928.263%18%4no data0.8%76
Jackson County19,4293.7%12.1%44336.170%10%51.10.2%86
Jasper County37,8643.2%8.0%22243.771%21%30.60.1%84
Jefferson County15,6764.2%11.2%30627.166%22%2no data0.1%48
Johnson County154,8811.6%5.5%8787.438%27%50.20.7%134
Jones County20,7994.0%12.3%59132.764%14%4no data0.3%123
Keokuk County9,9645.0%14.3%69221.980%23%2no data0.0%69
Kossuth County14,6105.4%14.4%83532.377%16%7no data0.0%122
Lee County33,1753.7%10.1%32062.978%28%20.70.1%106
Linn County229,4632.3%7.6%10186.754%19%52.20.7%231
Louisa County10,7104.3%12.8%43017.572%20%3no data1.6%46
Lucas County8,6855.0%13.1%59929.772%23%1no datano data52
Lyon County12,0875.2%15.8%99319.268%25%32.40.7%120
Madison County16,7603.7%11.9%43635.555%22%2no data0.1%73
Mahaska County22,0453.5%9.0%28629.770%24%2no data0.1%63
Marion County33,5513.6%9.1%37634.460%17%2no data0.1%126
Marshall County39,9713.9%10.2%26062.578%23%3no data0.1%104
Mills County14,5632.5%8.3%53618.562%21%14.00.5%78
Mitchell County10,5484.7%13.8%69237.774%12%31.50.2%73
Monona County8,6193.9%9.4%55725.175%32%12.30.6%48
Monroe County7,5464.3%13.1%62310.363%17%2no datano data47
Montgomery County10,2543.4%8.8%73133.780%23%2no data1.3%75
Muscatine County42,7353.2%8.3%22557.866%16%42.40.8%96
O'Brien County14,1033.3%10.1%83716.474%31%4no data0.1%118
Osceola County6,1145.6%17.2%2,02814.979%23%4no data0.4%124
Page County15,1683.6%8.8%48840.282%26%1no data0.0%74
Palo Alto County8,9023.8%10.1%86515.579%24%3no data0.1%77
Plymouth County25,6992.7%8.4%46749.263%37%30.90.2%120
Pocahontas County7,0404.5%12.4%1,05133.086%25%4no data0.0%74
Polk County497,4411.7%5.3%5292.049%32%41.30.4%258
Pottawattamie County93,4072.5%7.0%11980.466%19%12.81.3%111
Poweshiek County18,5823.8%11.7%32331.365%26%2no data0.1%60
Ringgold County4,6644.4%12.2%under 5,000 residents14.258%26%1no datano data36
Sac County9,7593.5%10.6%71727.381%27%3no data0.1%70
Scott County174,3022.0%6.2%13984.963%20%34.40.9%242
Shelby County11,7574.4%12.8%74822.882%33%1no data0.3%88
Sioux County35,9843.3%10.6%47052.464%38%32.61.2%169
Story County98,5922.4%6.9%13268.848%28%40.30.3%130
Tama County16,9824.5%13.7%37745.377%14%30.80.3%64
Taylor County5,9014.5%12.7%84738.581%24%2no datano data50
Union County12,0384.4%10.8%59849.574%29%1no data0.2%72
Van Buren County7,2365.5%16.3%82933.664%16%2no data0.6%60
Wapello County35,2653.9%10.8%27565.379%21%20.30.1%97
Warren County53,4842.7%8.4%19836.147%24%2no data0.1%106
Washington County22,5393.7%9.5%39044.269%26%4no data0.9%88
Wayne County6,5185.1%12.3%62922.068%28%1no datano data41
Webster County36,8483.1%8.8%27160.080%22%40.30.1%100
Winnebago County10,6484.7%13.4%67630.782%16%3no data0.0%72
Winneshiek County19,9724.2%13.8%49136.267%14%22.80.6%98
Woodbury County105,7602.5%6.8%15683.376%30%21.30.5%165
Worth County7,3804.2%11.8%1,0849.983%13%4no data0.1%80
Wright County12,8173.8%9.3%74941.580%19%4no data0.3%96

Download CSV, 99 rows

Iowa: click a header to sort. Per-capita storm rates start at 5,000 residents.

Sources

Iowa sources with periods and retrieval dates
SourcePeriodRetrieved
DOE LEAD (IA)20222 Oct 2026
FEMA NRI (IA)Dec 20252 Oct 2026
NOAA Storm Events (IA)2015 to 20252 Oct 2026
Census ACS (IA)2019 to 20232 Oct 2026
EIA-861 (IA)20241 Oct 2026

Iowa LEAD figures are group estimates, not bills. Methodology.

Keep going

Other states: Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts.

Questions

Which Iowa county has the highest home energy burden?

Adair County: 5.6% of income, against 3.9% for the median Iowa county (DOE LEAD 2022).

Which Iowa county has the lowest energy burden?

Dallas County at 1.6% of income.

How does Iowa compare with the whole country?

The median Iowa county has a burden of 3.9% and the median U.S. county 3.3%, across 99 Iowa counties and 3,053 U.S. counties with data.

Where do storms cause the most trouble in Iowa?

Osceola County has the most NOAA storm reports per 100,000 residents: 2,028 between 2015 and 2025.

Which Iowa county has the highest FEMA risk score?

Polk County: 92.0, rated relatively moderate by FEMA (Dec 2025).

Where are the oldest homes in Iowa?

Franklin County: 87% of homes were built before 1980; the median Iowa county is at 72% (Census ACS 2023).

Which Iowa county relies most on electric heat?

Crawford County: 44% of homes heat with electricity, against 22% in the median county.

Which Iowa county has the most flood claims per home?

Fremont County: 25.2 NFIP claims per 1,000 homes from 2015 to 2025; the median Iowa county has 1.9 (FEMA OpenFEMA).

Are storm reports the same as power outages in Iowa?

No: in Iowa they are weather reports, not outage counts.

Where can Iowa households get help with bills?

See the Iowa help page. Highest burden: Adair County.

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5.6% of income goes to home energy in Adair County, the highest of 99 Iowa counties