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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 Illinois ranked

7.9%of income goes to home energy in Alexander County, the highest of 102 Illinois counties

DuPage County is lowest at 1.8%, a gap of 4.5 times. The median Illinois county sits at 3.7%, against 3.3% for the median U.S. county. Source for Illinois: DOE LEAD 2022.

Illinois county map

Illinois counties, shaded by quintile of the selected measureJefferson County: 3.8%Logan County: 3.5%De Witt County: 3.9%Piatt County: 3.2%Brown County: 4.3%Perry County: 3.7%Marshall County: 3.9%Schuyler County: 4.1%Bond County: 3.7%Cass County: 3.8%Moultrie County: 3.8%Douglas County: 3.7%Effingham County: 2.9%Hamilton County: 4.2%Johnson County: 3.5%Bureau County: 4.0%McDonough County: 3.9%Marion County: 3.8%Menard County: 3.2%Stark County: 4.0%Warren County: 3.7%Jasper County: 3.9%DeKalb County: 2.8%Clay County: 5.6%Richland County: 4.2%Henry County: 3.0%Ford County: 4.0%Cook County: 2.1%Knox County: 3.9%McLean County: 2.1%Clinton County: 3.1%Putnam County: 3.4%Macon County: 3.2%Macoupin County: 3.7%Pulaski County: 5.3%Wayne County: 4.8%Cumberland County: 4.3%Pope County: 4.5%Champaign County: 2.5%Montgomery County: 4.0%Christian County: 3.9%Madison County: 2.9%Lawrence County: 3.5%Edwards County: 4.0%Mercer County: 3.1%Washington County: 3.5%Will County: 2.3%White County: 4.3%DuPage County: 1.8%Hancock County: 4.0%Alexander County: 7.9%Lake County: 1.9%Clark County: 4.2%Grundy County: 2.6%Saline County: 3.4%Massac County: 4.4%Rock Island County: 2.2%Vermilion County: 3.5%Franklin County: 3.8%Gallatin County: 3.9%Peoria County: 2.7%Whiteside County: 3.9%Scott County: 4.8%Livingston County: 3.8%Lee County: 3.6%Jo Daviess County: 4.1%Jersey County: 3.2%Henderson County: 3.9%Morgan County: 3.7%Mason County: 3.9%Pike County: 4.7%Randolph County: 3.5%Union County: 4.1%Williamson County: 2.9%Woodford County: 2.8%Hardin County: 4.2%Wabash County: 3.6%Boone County: 2.8%Monroe County: 2.5%Iroquois County: 3.9%Kankakee County: 3.3%St. Clair County: 3.0%Adams County: 3.3%LaSalle County: 3.2%Kane County: 2.2%Carroll County: 4.1%Crawford County: 3.6%Fayette County: 4.0%Shelby County: 4.3%Jackson County: 3.2%Kendall County: 2.3%Winnebago County: 3.1%Calhoun County: 4.2%Sangamon County: 2.5%Greene County: 4.4%Edgar County: 4.5%Tazewell County: 2.8%Coles County: 3.3%Fulton County: 3.7%Ogle County: 3.1%Stephenson County: 3.9%McHenry County: 2.2%
  • 1.8% to 2.9%
  • 2.9% to 3.5%
  • 3.5% to 3.9%
  • 3.9% to 4.1%
  • 4.1% to 7.9%

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

Highest energy burden in Illinois

Alexander County leads Illinois on burden at 7.9% of income and Clay County follows at 5.6%. For lower-income homes the top is Alexander County: 19.3% of income, against 9.7% in the median Illinois county.

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

  • Alexander County7.9
  • Clay County5.6
  • Pulaski County5.3
  • Wayne County4.8
  • Scott County4.8
  • Pike County4.7
  • Edgar County4.5
  • Pope County4.5
  • Greene County4.4
  • Massac County4.4
  • Illinois median county3.7
Illinois counties with the lowest home energy burden
Lowest burden in IllinoisShare of income (IL)Residents (IL)
DuPage County1.8%927,263
Lake County1.9%711,885
McLean County2.1%170,882
Cook County2.1%5,185,812
Kane County2.2%516,097

Storm reports and FEMA risk in Illinois

NOAA logged 151 damaging-wind, tornado, tropical, ice, winter and heat reports in Alexander County from 2015 to 2025, 2,995 for every 100,000 residents: the most in Illinois. FEMA scores Cook County highest at 100.0 (very high). In Illinois these are weather reports and an index, not outage counts.

Illinois top 5: Storm reports per 100,000 residents
Top 5 in Illinoisreports 2015-2025 (IL)Residents (IL)Rank (IL)
Alexander County2,9955,0421st
Pulaski County2,4645,0742nd
Edwards County1,7986,1183rd
Hamilton County1,5057,9724th
Putnam County1,1795,6005th
Illinois top 5: FEMA risk score
Top 5 in Illinoisscore 0-100 (IL)Residents (IL)Rank (IL)
Cook County100.05,185,8121st
DuPage County97.6927,2632nd
Will County97.3698,4503rd
Lake County96.0711,8854th
St. Clair County94.9254,7775th

Flood claims and flood insurance in Illinois

Calhoun County has the most NFIP flood claims per 1,000 homes in Illinois: 54.6 from 2015 to 2025, against 1.1 in the median Illinois county. Alexander County has the highest share of homes with flood insurance (3.5%, median county 0.3%). Claims are a record of insured losses, not outage counts.

Illinois top 5: Flood claims per 1,000 homes
Top 5 in Illinoisclaims 2015-2025 (IL)Residents (IL)Rank (IL)
Calhoun County54.64,4061st
Iroquois County29.926,7462nd
Jersey County19.921,3363rd
Alexander County14.55,0424th
Henderson County12.76,2845th
Illinois top 5: Flood insurance penetration
Top 5 in Illinois% of homes insured (IL)Residents (IL)Rank (IL)
Alexander County3.5%5,0421st
Calhoun County3.1%4,4062nd
Cass County2.5%12,8263rd
Massac County2.1%13,9584th
Henderson County2.1%6,2845th

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

Outliers: Illinois counties far from the state median

10 county-measure pairs sit 3 or more scaled median-absolute-deviation units from the Illinois median. Most extreme: Calhoun County, flood claims per 1,000 homes 54.6 against a median of 1.1.

Illinois outliers by deviation from the state median
CountyMeasureValueIllinois medianDeviations
Calhoun CountyFlood claims per 1,000 homes54.61.1+44.6
Iroquois CountyFlood claims per 1,000 homes29.91.1+23.9
Jersey CountyFlood claims per 1,000 homes19.91.1+15.6
Alexander CountyStorm reports per 100,000 residents2,995313+12.0
Alexander CountyFlood claims per 1,000 homes14.51.1+11.1
Pulaski CountyStorm reports per 100,000 residents2,464313+9.7
Henderson CountyFlood claims per 1,000 homes12.71.1+9.6
Alexander CountyFlood insurance penetration3.5%0.3%+9.5
Calhoun CountyFlood insurance penetration3.1%0.3%+8.3
Alexander CountyBurden, lower-income homes19.3%9.7%+8.1

Old homes, electric heat and utilities in Illinois

Stark County has the oldest stock: 83% of homes date from before 1980. Electric heat is most common in Williamson County at 66% of homes, and Clay County lists 5 utilities, the most in Illinois.

Illinois top 5: Homes built before 1980
Top 5 in Illinois% of homes (IL)Residents (IL)Rank (IL)
Stark County83%5,3241st
Warren County83%16,5762nd
Knox County82%49,2943rd
Ford County82%13,3964th
Mason County80%12,8785th
Illinois top 5: Homes heated by electricity
Top 5 in Illinois% of homes (IL)Residents (IL)Rank (IL)
Williamson County66%66,9021st
Johnson County58%13,3502nd
Jackson County56%52,7063rd
Franklin County49%37,5414th
Pope County46%3,7575th

Find your Illinois county

  • Pick a Illinois county to see its ranks.

All 102 Illinois counties, sortable

102 Illinois counties, all measures
Adams County65,1663.3%9.3%12764.271%33%11.90.3%83
Alexander County5,0427.9%19.3%2,99544.168%42%114.53.5%151
Bond County16,6273.7%10.2%24736.258%29%20.70.1%41
Boone County53,3162.8%8.4%16157.349%12%20.50.3%86
Brown County6,3204.3%11.2%6014.772%33%1no data0.2%38
Bureau County33,0274.0%10.6%34262.380%14%30.40.4%113
Calhoun County4,4064.2%13.8%under 5,000 residents6.162%21%154.63.1%36
Carroll County15,6214.1%10.8%52539.070%11%2no data0.1%82
Cass County12,8263.8%10.1%29638.668%20%21.42.5%38
Champaign County206,0982.5%8.3%13690.548%38%30.30.3%280
Christian County33,6843.9%9.9%30354.074%21%20.30.1%102
Clark County15,3284.2%10.2%28127.367%21%3no data0.1%43
Clay County13,1735.6%14.6%61541.157%27%5no data0.1%81
Clinton County36,8993.1%9.4%16565.655%25%30.70.2%61
Coles County46,6893.3%8.2%20870.466%42%21.00.3%97
Cook County5,185,8122.1%9.1%14100.074%16%10.90.5%739
Crawford County18,5883.6%10.7%21037.069%23%2no data0.2%39
Cumberland County10,3784.3%10.4%40525.966%22%4no data0.0%42
De Witt County15,4613.9%9.6%46629.377%13%2no data0.3%72
DeKalb County100,5122.8%7.7%17980.853%23%10.20.5%180
Douglas County19,6863.7%9.5%32562.167%29%33.61.2%64
DuPage County927,2631.8%7.6%3097.654%14%30.70.6%276
Edgar County16,6374.5%10.3%42134.973%23%3no data0.1%70
Edwards County6,1184.0%9.9%1,79826.170%30%2no datano data110
Effingham County34,5052.9%8.3%27853.853%33%4no data0.1%96
Fayette County21,3804.0%10.2%22048.864%15%3no data0.0%47
Ford County13,3964.0%10.0%59726.282%20%4no data0.1%80
Franklin County37,5413.8%9.5%40280.970%49%50.50.3%151
Fulton County33,2593.7%9.5%38859.078%20%1no data0.2%129
Gallatin County4,8573.9%10.3%under 5,000 residents33.971%29%3no data0.8%127
Greene County11,8374.4%11.9%35513.076%21%1no data0.2%42
Grundy County52,9202.6%7.3%16866.542%13%13.30.8%89
Hamilton County7,9724.2%10.9%1,50530.861%16%3no datano data120
Hancock County17,4344.0%10.5%50531.174%37%13.50.7%88
Hardin County3,6234.2%9.1%under 5,000 residents8.358%23%1no data0.2%102
Henderson County6,2843.9%9.8%70017.565%11%112.72.1%44
Henry County48,9483.0%8.5%35157.179%14%40.30.4%172
Iroquois County26,7463.9%10.0%46474.078%19%229.92.0%124
Jackson County52,7063.2%7.8%40087.158%56%20.70.6%211
Jasper County9,2333.9%10.8%34720.458%16%2no data0.1%32
Jefferson County36,8083.8%9.7%36177.255%39%30.60.2%133
Jersey County21,3363.2%10.4%22518.957%31%119.90.9%48
Jo Daviess County21,9184.1%10.9%51651.356%10%30.70.3%113
Johnson County13,3503.5%8.8%89151.144%58%3no data0.1%119
Kane County516,0972.2%7.6%6594.646%12%40.50.4%335
Kankakee County106,8333.3%9.7%13088.266%13%14.20.8%139
Kendall County135,0532.3%7.0%8880.225%9%30.10.2%119
Knox County49,2943.9%9.4%21357.282%21%2no data0.1%105
LaSalle County109,0493.2%9.4%17186.171%14%40.90.5%186
Lake County711,8851.9%8.3%2696.047%14%12.70.8%188
Lawrence County15,1373.5%9.4%40349.271%26%21.30.2%61
Lee County34,0583.6%10.6%31754.472%19%20.30.6%108
Livingston County35,6593.8%10.8%31171.875%14%41.01.2%111
Logan County27,8703.5%9.0%48858.177%24%3no data0.3%136
Macon County102,5913.2%9.3%16183.376%23%40.30.2%165
Macoupin County44,5663.7%10.6%17179.968%22%2no data0.1%76
Madison County264,6312.9%9.1%5093.462%32%21.80.8%133
Marion County37,2943.8%9.7%20677.161%28%4no data0.1%77
Marshall County11,7153.9%10.4%70827.276%20%32.20.4%83
Mason County12,8783.9%10.2%53643.080%17%23.30.6%69
Massac County13,9584.4%11.0%94661.657%34%22.42.1%132
McDonough County27,1023.9%9.8%42437.572%34%1no data0.1%115
McHenry County311,3662.2%8.4%6890.839%11%21.10.7%212
McLean County170,8822.1%7.4%11586.949%23%30.60.2%197
Menard County12,1693.2%9.5%43628.757%17%2no data0.2%53
Mercer County15,6193.1%8.5%4678.878%11%2no data0.2%73
Monroe County34,9692.5%8.8%20641.941%32%21.10.9%72
Montgomery County28,0784.0%10.6%31365.471%25%3no data0.0%88
Morgan County32,6213.7%9.6%21571.173%26%20.90.6%70
Moultrie County14,4693.8%10.3%40145.068%23%4no data0.6%58
Ogle County51,5363.1%9.0%24371.164%15%21.60.8%125
Peoria County179,8312.7%9.2%10690.771%25%12.10.4%190
Perry County20,8103.7%9.4%63972.162%40%3no data0.1%133
Piatt County16,7023.2%10.0%39535.064%22%4no data0.4%66
Pike County14,6254.7%13.7%43130.375%33%12.91.2%63
Pope County3,7574.5%13.8%under 5,000 residents14.936%46%1no datano data107
Pulaski County5,0745.3%12.1%2,46449.065%43%12.91.3%125
Putnam County5,6003.4%9.4%1,1799.259%13%2no data0.3%66
Randolph County30,1423.5%9.6%19978.664%36%22.71.2%60
Richland County15,6754.2%9.9%27446.765%21%3no data0.1%43
Rock Island County142,9952.2%5.8%10584.177%16%14.61.3%150
Saline County23,3873.4%8.8%58270.166%37%20.90.8%136
Sangamon County195,2172.5%9.2%12391.763%21%40.30.2%240
Schuyler County6,8264.1%11.1%63011.469%29%1no data0.3%43
Scott County4,8474.8%13.5%under 5,000 residents2.874%24%1no data0.8%25
Shelby County20,8674.3%10.6%29751.768%20%5no data0.0%62
St. Clair County254,7773.0%9.8%5794.955%33%43.41.0%146
Stark County5,3244.0%10.4%9587.383%21%2no data0.2%51
Stephenson County44,0423.9%9.7%23673.974%16%35.10.3%104
Tazewell County130,5552.8%7.9%15584.272%20%30.40.2%203
Union County16,9724.1%10.7%90155.458%46%21.70.9%153
Vermilion County73,1793.5%8.6%27778.877%35%21.00.1%203
Wabash County11,1993.6%9.0%1,01824.868%23%4no data0.2%114
Warren County16,5763.7%9.5%47715.583%16%1no data0.4%79
Washington County13,6823.5%10.8%43155.266%31%3no data0.1%59
Wayne County15,9944.8%11.0%71340.760%25%3no data0.2%114
White County13,7084.3%11.1%1,04354.375%20%31.40.8%143
Whiteside County55,1923.9%10.6%19665.878%15%22.10.7%108
Will County698,4502.3%8.5%4897.337%9%20.70.5%335
Williamson County66,9022.9%8.1%26385.849%66%30.90.5%176
Winnebago County283,2893.1%9.5%6492.464%12%22.30.6%182
Woodford County38,3482.8%9.5%25839.961%17%32.00.6%99

Download CSV, 102 rows

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

Sources

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

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

Keep going

Other states: Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine.

Questions

Which Illinois county has the highest home energy burden?

Alexander County: 7.9% of income, against 3.7% for the median Illinois county (DOE LEAD 2022).

Which Illinois county has the lowest energy burden?

DuPage County at 1.8% of income.

How does Illinois compare with the whole country?

The median Illinois county has a burden of 3.7% and the median U.S. county 3.3%, across 102 Illinois counties and 3,053 U.S. counties with data.

Where do storms cause the most trouble in Illinois?

Alexander County has the most NOAA storm reports per 100,000 residents: 2,995 between 2015 and 2025.

Which Illinois county has the highest FEMA risk score?

Cook County: 100.0, rated very high by FEMA (Dec 2025).

Where are the oldest homes in Illinois?

Stark County: 83% of homes were built before 1980; the median Illinois county is at 67% (Census ACS 2023).

Which Illinois county relies most on electric heat?

Williamson County: 66% of homes heat with electricity, against 22% in the median county.

Which Illinois county has the most flood claims per home?

Calhoun County: 54.6 NFIP claims per 1,000 homes from 2015 to 2025; the median Illinois county has 1.1 (FEMA OpenFEMA).

Are storm reports the same as power outages in Illinois?

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

Where can Illinois households get help with bills?

See the Illinois help page. Highest burden: Alexander County.

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7.9% of income goes to home energy in Alexander County, the highest of 102 Illinois counties