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Illinois natural hazard risk by county

Illinois has about $6.41 billion in modeled expected annual loss across 102 counties. The state accounts for 4.2% of the national modeled loss total. Its total ranks #4 among 56 state-level entries by modeled loss. FEMA published these 102 county estimates in its December 2025 National Risk Index. The modeled $6.41 billion annual average does not predict loss in any one year.

Modeled expected annual loss
$6.41 billion / year
Share of US loss
4.2%
State loss rank
#4 of 56
Largest modeled-loss hazard
Riverine Flood

Illinois county modeled loss

Ford County, IL: $8.8 millionSaline County, IL: $20.4 millionHamilton County, IL: $12.5 millionWinnebago County, IL: $121.6 millionDeKalb County, IL: $47.4 millionMarshall County, IL: $8.7 millionPiatt County, IL: $12.6 millionRichland County, IL: $12.3 millionLogan County, IL: $20.3 millionFayette County, IL: $15.1 millionEffingham County, IL: $20.4 millionKendall County, IL: $74.8 millionKnox County, IL: $18.0 millionLaSalle County, IL: $60.5 millionTazewell County, IL: $60.0 millionChristian County, IL: $21.9 millionScott County, IL: $3.7 millionGrundy County, IL: $50.1 millionJefferson County, IL: $34.1 millionPutnam County, IL: $4.7 millionMarion County, IL: $30.9 millionHenry County, IL: $24.4 millionMacoupin County, IL: $38.7 millionDe Witt County, IL: $9.5 millionMcDonough County, IL: $10.1 millionWayne County, IL: $13.4 millionSt. Clair County, IL: $174.6 millionJasper County, IL: $10.0 millionCumberland County, IL: $7.4 millionBond County, IL: $11.2 millionEdgar County, IL: $11.7 millionOgle County, IL: $36.1 millionJo Daviess County, IL: $15.6 millionFulton County, IL: $21.2 millionBureau County, IL: $22.4 millionStephenson County, IL: $28.9 millionPike County, IL: $9.6 millionMason County, IL: $12.3 millionLawrence County, IL: $13.7 millionMcHenry County, IL: $142.5 millionKane County, IL: $198.1 millionDouglas County, IL: $19.7 millionJersey County, IL: $10.8 millionCass County, IL: $12.2 millionMassac County, IL: $18.5 millionMorgan County, IL: $28.5 millionMercer County, IL: $6.9 millionSchuyler County, IL: $4.1 millionWabash County, IL: $7.6 millionFranklin County, IL: $31.9 millionGallatin County, IL: $6.9 millionGreene County, IL: $6.1 millionEdwards County, IL: $6.2 millionWarren County, IL: $7.0 millionBrown County, IL: $3.2 millionMontgomery County, IL: $22.2 millionMadison County, IL: $154.9 millionUnion County, IL: $14.8 millionPope County, IL: $5.4 millionClark County, IL: $8.8 millionLee County, IL: $20.6 millionShelby County, IL: $19.8 millionCook County, IL: $2.42 billionKankakee County, IL: $68.2 millionPulaski County, IL: $10.8 millionClay County, IL: $11.9 millionVermilion County, IL: $32.3 millionMenard County, IL: $8.1 millionMonroe County, IL: $22.6 millionRock Island County, IL: $45.4 millionWilliamson County, IL: $52.5 millionWoodford County, IL: $21.9 millionHardin County, IL: $3.6 millionAdams County, IL: $25.9 millionIroquois County, IL: $33.9 millionLivingston County, IL: $32.8 millionHenderson County, IL: $4.9 millionBoone County, IL: $21.4 millionAlexander County, IL: $9.5 millionCarroll County, IL: $10.8 millionWill County, IL: $348.1 millionStark County, IL: $4.6 millionRandolph County, IL: $35.4 millionLake County, IL: $266.5 millionMacon County, IL: $47.0 millionWashington County, IL: $18.4 millionCrawford County, IL: $14.2 millionCalhoun County, IL: $4.1 millionMcLean County, IL: $81.3 millionChampaign County, IL: $93.3 millionClinton County, IL: $27.6 millionHancock County, IL: $8.4 millionWhiteside County, IL: $24.6 millionWhite County, IL: $14.9 millionSangamon County, IL: $114.8 millionMoultrie County, IL: $10.4 millionJohnson County, IL: $11.9 millionPeoria County, IL: $84.7 millionJackson County, IL: $50.0 millionColes County, IL: $30.8 millionPerry County, IL: $26.0 millionDuPage County, IL: $366.0 millionCook County, IL: detailed page available
  • Positive estimates to $8.8 million
  • Above $8.8 million to $13.7 million
  • Above $13.7 million to $22.6 million
  • Above $22.6 million to $47.4 million
  • Above $47.4 million to $2.42 billion
  • No FEMA estimate

Illinois counties use five within-state quantile classes of modeled expected annual loss. Darker rust means a larger estimate; outlined counties have detailed pages.

View chart data
CountyModeled expected annual loss (USD/year)Overall risk rating
Ford County, IL8,828,656.38Very Low
Saline County, IL20,392,960.40Relatively Low
Hamilton County, IL12,455,533.92Very Low
Winnebago County, IL121,597,947.80Relatively Moderate
DeKalb County, IL47,411,434.64Relatively Low
Marshall County, IL8,704,519.83Very Low
Piatt County, IL12,624,296.17Very Low
Richland County, IL12,273,221.79Relatively Low
Logan County, IL20,299,369.14Relatively Low
Fayette County, IL15,131,974.89Relatively Low
Effingham County, IL20,408,988.27Relatively Low
Kendall County, IL74,823,944.68Relatively Low
Knox County, IL17,951,509.70Relatively Low
LaSalle County, IL60,541,228.43Relatively Moderate
Tazewell County, IL60,019,617.65Relatively Moderate
Christian County, IL21,883,264.35Relatively Low
Scott County, IL3,708,379.16Very Low
Grundy County, IL50,139,117.36Relatively Low
Jefferson County, IL34,138,504.28Relatively Low
Putnam County, IL4,728,741.00Very Low
Marion County, IL30,878,882.72Relatively Low
Henry County, IL24,355,933.03Relatively Low
Macoupin County, IL38,671,243.82Relatively Low
De Witt County, IL9,546,427.62Very Low
McDonough County, IL10,053,899.00Very Low
Wayne County, IL13,383,685.52Very Low
St. Clair County, IL174,579,323.01Relatively High
Jasper County, IL9,965,553.96Very Low
Cumberland County, IL7,399,316.42Very Low
Bond County, IL11,151,564.66Very Low
Edgar County, IL11,699,641.06Very Low
Ogle County, IL36,146,378.57Relatively Low
Jo Daviess County, IL15,624,257.10Relatively Low
Fulton County, IL21,231,900.86Relatively Low
Bureau County, IL22,415,032.46Relatively Low
Stephenson County, IL28,896,227.70Relatively Low
Pike County, IL9,649,743.04Very Low
Mason County, IL12,314,095.68Relatively Low
Lawrence County, IL13,681,364.60Relatively Low
McHenry County, IL142,494,030.67Relatively Moderate
Kane County, IL198,132,658.20Relatively High
Douglas County, IL19,702,540.65Relatively Low
Jersey County, IL10,844,374.35Very Low
Cass County, IL12,184,782.26Very Low
Massac County, IL18,521,804.64Relatively Low
Morgan County, IL28,464,681.06Relatively Low
Mercer County, IL6,942,673.01Very Low
Schuyler County, IL4,069,061.72Very Low
Wabash County, IL7,606,470.69Very Low
Franklin County, IL31,930,319.02Relatively Low
Gallatin County, IL6,873,466.82Very Low
Greene County, IL6,062,326.91Very Low
Edwards County, IL6,223,849.92Very Low
Warren County, IL7,022,690.80Very Low
Brown County, IL3,163,919.71Very Low
Montgomery County, IL22,152,722.18Relatively Low
Madison County, IL154,889,207.40Relatively Moderate
Union County, IL14,835,665.91Relatively Low
Pope County, IL5,445,447.39Very Low
Clark County, IL8,835,532.14Very Low
Lee County, IL20,635,389.76Relatively Low
Shelby County, IL19,815,917.52Relatively Low
Cook County, IL2,424,304,449.02Very High
Kankakee County, IL68,155,478.54Relatively Moderate
Pulaski County, IL10,805,401.93Relatively Low
Clay County, IL11,877,212.88Very Low
Vermilion County, IL32,268,477.76Relatively Low
Menard County, IL8,082,822.96Very Low
Monroe County, IL22,599,819.66Very Low
Rock Island County, IL45,449,248.01Relatively Moderate
Williamson County, IL52,511,385.01Relatively Moderate
Woodford County, IL21,881,648.27Very Low
Hardin County, IL3,597,229.19Very Low
Adams County, IL25,890,188.32Relatively Low
Iroquois County, IL33,920,630.09Relatively Low
Livingston County, IL32,766,513.05Relatively Low
Henderson County, IL4,907,232.42Very Low
Boone County, IL21,382,226.03Relatively Low
Alexander County, IL9,539,948.10Relatively Low
Carroll County, IL10,848,407.07Very Low
Will County, IL348,107,556.37Relatively High
Stark County, IL4,553,199.13Very Low
Randolph County, IL35,386,671.31Relatively Low
Lake County, IL266,495,881.88Relatively High
Macon County, IL47,014,448.15Relatively Moderate
Washington County, IL18,391,327.68Relatively Low
Crawford County, IL14,194,173.67Very Low
Calhoun County, IL4,083,973.64Very Low
McLean County, IL81,319,615.11Relatively Moderate
Champaign County, IL93,297,730.11Relatively Moderate
Clinton County, IL27,585,249.44Relatively Low
Hancock County, IL8,377,904.99Very Low
Whiteside County, IL24,605,316.23Relatively Low
White County, IL14,922,060.17Relatively Low
Sangamon County, IL114,835,346.81Relatively Moderate
Moultrie County, IL10,412,622.77Relatively Low
Johnson County, IL11,939,793.37Relatively Low
Peoria County, IL84,658,790.78Relatively Moderate
Jackson County, IL49,965,821.10Relatively Moderate
Coles County, IL30,840,171.91Relatively Low
Perry County, IL25,998,257.31Relatively Low
DuPage County, IL366,006,557.52Relatively High

Reading the Illinois county map

The map groups 102 county estimates into five within-state loss classes. Each boundary follows the county geography, while the fill represents modeled dollars per year. The class breaks are calculated from Illinois county values, so a matching shade on another state page need not represent the same amount. Grey marks unmatched geography or an unavailable estimate. Outlined counties link to the detailed profiles available in this release; counties without profiles still contribute to the state totals.

Together, the three largest estimates account for 49.0% of Illinois modeled annual loss. Their combined population represents 53.9% of the state source population. Comparing these two shares helps distinguish the concentration of modeled dollars from the concentration of residents. Neither share identifies the exposure of an individual address, and the map does not show the location of damage within a county.

Ten largest county loss estimates

USD / yearCook County, IL$2.42 billionCook County, IL: 2,424,304,449.02 USD / yearDuPage County, IL$366.0 millionDuPage County, IL: 366,006,557.52 USD / yearWill County, IL$348.1 millionWill County, IL: 348,107,556.37 USD / yearLake County, IL$266.5 millionLake County, IL: 266,495,881.88 USD / yearKane County, IL$198.1 millionKane County, IL: 198,132,658.20 USD / yearSt. Clair County, IL$174.6 millionSt. Clair County, IL: 174,579,323.01 USD / yearMadison County, IL$154.9 millionMadison County, IL: 154,889,207.40 USD / yearMcHenry County, IL$142.5 millionMcHenry County, IL: 142,494,030.67 USD / yearWinnebago County, IL$121.6 millionWinnebago County, IL: 121,597,947.80 USD / yearSangamon County, IL$114.8 millionSangamon County, IL: 114,835,346.81 USD / year0$2.42 billion

Cook County, IL has the largest modeled expected annual loss in this comparison, about $2.42 billion.

View chart data
PlaceUSD / year
Cook County, IL2,424,304,449.02
DuPage County, IL366,006,557.52
Will County, IL348,107,556.37
Lake County, IL266,495,881.88
Kane County, IL198,132,658.20
St. Clair County, IL174,579,323.01
Madison County, IL154,889,207.40
McHenry County, IL142,494,030.67
Winnebago County, IL121,597,947.80
Sangamon County, IL114,835,346.81

County totals beside population

Cook County, IL combines about $2.42 billion in modeled annual loss with 5,272,775 recorded residents. Dividing those figures gives about $460 per resident, compared with $501 statewide. On this population-adjusted measure, the county places #85 among the 102 state county records. This ratio spreads all modeled losses across residents for comparison; it is not a household bill, an insurance premium or an estimate of personal damage.

DuPage County, IL combines about $366.0 million in modeled annual loss with 932,368 recorded residents. Dividing those figures gives about $393 per resident, compared with $501 statewide. On this population-adjusted measure, the county places #97 among the 102 state county records. This ratio spreads all modeled losses across residents for comparison; it is not a household bill, an insurance premium or an estimate of personal damage.

State hazard loss mix

Riverine Flood$2.92 billion · 45.6%Riverine Flood: 2,923,228,695.03 USD/year; 45.6%Cold Wave$1.39 billion · 21.7%Cold Wave: 1,388,439,211.25 USD/year; 21.7%Tornado$875.7 million · 13.7%Tornado: 875,655,435.81 USD/year; 13.7%Earthquake$469.6 million · 7.3%Earthquake: 469,613,871.37 USD/year; 7.3%Heat Wave$359.0 million · 5.6%Heat Wave: 359,010,248.75 USD/year; 5.6%Strong Wind$154.0 million · 2.4%Strong Wind: 153,983,762.13 USD/year; 2.4%Other$240.4 million · 3.8%Other: 240,406,796.00 USD/year; 3.8%0$2.92 billion

Riverine Flood leads the modeled expected annual loss mix; bar lengths share a zero baseline.

View chart data
HazardUSD / yearShare
Riverine Flood2,923,228,695.0345.6%
Cold Wave1,388,439,211.2521.7%
Tornado875,655,435.8113.7%
Earthquake469,613,871.377.3%
Heat Wave359,010,248.755.6%
Strong Wind153,983,762.132.4%
Other240,406,796.003.8%

Will County, IL combines about $348.1 million in modeled annual loss with 696,135 recorded residents. Dividing those figures gives about $500 per resident, compared with $501 statewide. On this population-adjusted measure, the county places #79 among the 102 state county records. This ratio spreads all modeled losses across residents for comparison; it is not a household bill, an insurance premium or an estimate of personal damage.

Where the leading hazards are concentrated

For riverine flooding, Cook County, IL contributes 37.5% of the state hazard total. The next county, DuPage County, IL, contributes about $195.3 million annually, compared with $1.10 billion for the leader. Across Illinois, 102 county records have a positive modeled estimate for this hazard. The remaining counties together account for about $1.63 billion after those two leading estimates. The state places #3 of 56 state-level entries for this hazard. Its share of the state loss mix is 45.6%. These comparisons describe modeled losses rather than future events.

County hazard rating counts

Riverine FloodVery Low: 29 counties29Relatively Low: 46 counties46Relatively Moderate: 20 counties20Relatively High: 6 countiesVery High: 1 countiesCold WaveVery Low: 4 countiesRelatively Low: 38 counties38Relatively Moderate: 34 counties34Relatively High: 21 counties21Very High: 5 countiesTornadoVery Low: 5 countiesRelatively Low: 52 counties52Relatively Moderate: 31 counties31Relatively High: 10 counties10Very High: 4 counties
  • Very Low
  • Relatively Low
  • Relatively Moderate
  • Relatively High
  • Very High
  • No rating

Illinois has 102 county records in each row. Each bar shows the FEMA risk rating distribution for one of the three largest modeled-loss hazards.

View chart data
HazardRatingCount
Riverine FloodVery Low29
Riverine FloodRelatively Low46
Riverine FloodRelatively Moderate20
Riverine FloodRelatively High6
Riverine FloodVery High1
Riverine FloodNo rating0
Cold WaveVery Low4
Cold WaveRelatively Low38
Cold WaveRelatively Moderate34
Cold WaveRelatively High21
Cold WaveVery High5
Cold WaveNo rating0
TornadoVery Low5
TornadoRelatively Low52
TornadoRelatively Moderate31
TornadoRelatively High10
TornadoVery High4
TornadoNo rating0

For cold waves, Cook County, IL contributes 50.4% of the state hazard total. The next county, DuPage County, IL, contributes about $72.3 million annually, compared with $700.0 million for the leader. Across Illinois, 102 county records have a positive modeled estimate for this hazard. The remaining counties together account for about $616.2 million after those two leading estimates. The state places #1 of 56 state-level entries for this hazard. Its share of the state loss mix is 21.7%. These comparisons describe modeled losses rather than future events.

For tornadoes, Cook County, IL contributes 39.4% of the state hazard total. The next county, DuPage County, IL, contributes about $67.0 million annually, compared with $344.7 million for the leader. Across Illinois, 102 county records have a positive modeled estimate for this hazard. The remaining counties together account for about $463.9 million after those two leading estimates. The state places #2 of 56 state-level entries for this hazard. Its share of the state loss mix is 13.7%. These comparisons describe modeled losses rather than future events.

For earthquakes, Cook County, IL contributes 12.2% of the state hazard total. The next county, St. Clair County, IL, contributes about $50.8 million annually, compared with $57.3 million for the leader. Across Illinois, 102 county records have a positive modeled estimate for this hazard. The remaining counties together account for about $361.5 million after those two leading estimates. The state places #8 of 56 state-level entries for this hazard. Its share of the state loss mix is 7.3%. These comparisons describe modeled losses rather than future events.

For heat waves, Cook County, IL contributes 53.9% of the state hazard total. The next county, Madison County, IL, contributes about $16.5 million annually, compared with $193.4 million for the leader. Across Illinois, 102 county records have a positive modeled estimate for this hazard. The remaining counties together account for about $149.1 million after those two leading estimates. The state places #6 of 56 state-level entries for this hazard. Its share of the state loss mix is 5.6%. These comparisons describe modeled losses rather than future events.

For strong wind, Cook County, IL contributes 7.6% of the state hazard total. The next county, DuPage County, IL, contributes about $10.5 million annually, compared with $11.6 million for the leader. Across Illinois, 102 county records have a positive modeled estimate for this hazard. The remaining counties together account for about $131.8 million after those two leading estimates. The state places #6 of 56 state-level entries for this hazard. Its share of the state loss mix is 2.4%. These comparisons describe modeled losses rather than future events.

Illinois hazard totals and county comparisons

Hazard comparison · VH / RH = Very High / Relatively High county counts; US rank compares state totals
HazardModeled annual lossState shareVH / RH countiesLargest countyUS state rank
Riverine Flood$2.92 billion45.6%45.60% of state modeled loss1 / 6Cook County, IL#3 of 56
Cold Wave$1.39 billion21.7%21.66% of state modeled loss5 / 21Cook County, IL#1 of 56
Tornado$875.7 million13.7%13.66% of state modeled loss4 / 10Cook County, IL#2 of 56
Earthquake$469.6 million7.3%7.33% of state modeled loss0 / 1Cook County, IL#8 of 56
Heat Wave$359.0 million5.6%5.60% of state modeled loss1 / 2Cook County, IL#6 of 56
Strong Wind$154.0 million2.4%2.40% of state modeled loss5 / 28Cook County, IL#6 of 56
Hail$85.5 million1.3%1.33% of state modeled loss0 / 7Cook County, IL#11 of 56
Drought$83.2 million1.3%1.30% of state modeled loss0 / 10Sangamon County, IL#7 of 56
Lightning$37.3 million0.6%0.58% of state modeled loss1 / 11Cook County, IL#16 of 56
Winter Weather$16.1 million0.3%0.25% of state modeled loss1 / 14Cook County, IL#12 of 56
Ice Storm$15.4 million0.2%0.24% of state modeled loss1 / 3Cook County, IL#22 of 56
Hurricane$1.5 million0.0%0.02% of state modeled loss0 / 0Champaign County, IL#34 of 56
Landslide$832,0000.0%0.01% of state modeled loss0 / 0Peoria County, IL#24 of 56
Wildfire$510,0000.0%0.01% of state modeled loss0 / 0Will County, IL#45 of 56
Coastal Flood$42,0000.0%0.00% of state modeled loss0 / 0Cook County, IL#33 of 56

Hazard shares show which modeled expected annual losses dominate the state total; ranks compare state totals for the same hazard.

Illinois hazard totals combine the county estimates. The largest county column identifies concentration within each hazard; the state rank compares the same hazard across state-level entries.

Illinois county loss totals

Illinois county modeled annual loss
CountyRisk index ratingModeled annual lossLargest hazard
Cook CountyVery High$2.42 billionRiverine Flood
DuPage CountyRelatively High$366.0 millionRiverine Flood
Will CountyRelatively High$348.1 millionRiverine Flood
Lake CountyRelatively High$266.5 millionRiverine Flood
Kane CountyRelatively High$198.1 millionRiverine Flood
St. Clair CountyRelatively High$174.6 millionRiverine Flood
Madison CountyRelatively Moderate$154.9 millionRiverine Flood
McHenry CountyRelatively Moderate$142.5 millionRiverine Flood
Winnebago CountyRelatively Moderate$121.6 millionRiverine Flood
Sangamon CountyRelatively Moderate$114.8 millionRiverine Flood
Champaign CountyRelatively Moderate$93.3 millionRiverine Flood
Peoria CountyRelatively Moderate$84.7 millionRiverine Flood
McLean CountyRelatively Moderate$81.3 millionRiverine Flood
Kendall CountyRelatively Low$74.8 millionRiverine Flood
Kankakee CountyRelatively Moderate$68.2 millionRiverine Flood
Show all 102 counties
Illinois county modeled annual loss
CountyRisk index ratingModeled annual lossLargest hazard
LaSalle CountyRelatively Moderate$60.5 millionRiverine Flood
Tazewell CountyRelatively Moderate$60.0 millionRiverine Flood
Williamson CountyRelatively Moderate$52.5 millionEarthquake
Grundy CountyRelatively Low$50.1 millionRiverine Flood
Jackson CountyRelatively Moderate$50.0 millionEarthquake
DeKalb CountyRelatively Low$47.4 millionRiverine Flood
Macon CountyRelatively Moderate$47.0 millionRiverine Flood
Rock Island CountyRelatively Moderate$45.4 millionRiverine Flood
Macoupin CountyRelatively Low$38.7 millionRiverine Flood
Ogle CountyRelatively Low$36.1 millionRiverine Flood
Randolph CountyRelatively Low$35.4 millionEarthquake
Jefferson CountyRelatively Low$34.1 millionEarthquake
Iroquois CountyRelatively Low$33.9 millionRiverine Flood
Livingston CountyRelatively Low$32.8 millionRiverine Flood
Vermilion CountyRelatively Low$32.3 millionRiverine Flood
Franklin CountyRelatively Low$31.9 millionEarthquake
Marion CountyRelatively Low$30.9 millionEarthquake
Coles CountyRelatively Low$30.8 millionRiverine Flood
Stephenson CountyRelatively Low$28.9 millionRiverine Flood
Morgan CountyRelatively Low$28.5 millionCold Wave
Clinton CountyRelatively Low$27.6 millionRiverine Flood
Perry CountyRelatively Low$26.0 millionEarthquake
Adams CountyRelatively Low$25.9 millionRiverine Flood
Whiteside CountyRelatively Low$24.6 millionRiverine Flood
Henry CountyRelatively Low$24.4 millionRiverine Flood
Monroe CountyVery Low$22.6 millionRiverine Flood
Bureau CountyRelatively Low$22.4 millionRiverine Flood
Montgomery CountyRelatively Low$22.2 millionRiverine Flood
Christian CountyRelatively Low$21.9 millionRiverine Flood
Woodford CountyVery Low$21.9 millionRiverine Flood
Boone CountyRelatively Low$21.4 millionRiverine Flood
Fulton CountyRelatively Low$21.2 millionRiverine Flood
Lee CountyRelatively Low$20.6 millionRiverine Flood
Effingham CountyRelatively Low$20.4 millionRiverine Flood
Saline CountyRelatively Low$20.4 millionEarthquake
Logan CountyRelatively Low$20.3 millionRiverine Flood
Shelby CountyRelatively Low$19.8 millionRiverine Flood
Douglas CountyRelatively Low$19.7 millionRiverine Flood
Massac CountyRelatively Low$18.5 millionEarthquake
Washington CountyRelatively Low$18.4 millionEarthquake
Knox CountyRelatively Low$18.0 millionRiverine Flood
Jo Daviess CountyRelatively Low$15.6 millionRiverine Flood
Fayette CountyRelatively Low$15.1 millionRiverine Flood
White CountyRelatively Low$14.9 millionEarthquake
Union CountyRelatively Low$14.8 millionEarthquake
Crawford CountyVery Low$14.2 millionRiverine Flood
Lawrence CountyRelatively Low$13.7 millionRiverine Flood
Wayne CountyVery Low$13.4 millionRiverine Flood
Piatt CountyVery Low$12.6 millionRiverine Flood
Hamilton CountyVery Low$12.5 millionEarthquake
Mason CountyRelatively Low$12.3 millionRiverine Flood
Richland CountyRelatively Low$12.3 millionRiverine Flood
Cass CountyVery Low$12.2 millionCold Wave
Johnson CountyRelatively Low$11.9 millionEarthquake
Clay CountyVery Low$11.9 millionRiverine Flood
Edgar CountyVery Low$11.7 millionRiverine Flood
Bond CountyVery Low$11.2 millionRiverine Flood
Carroll CountyVery Low$10.8 millionRiverine Flood
Jersey CountyVery Low$10.8 millionRiverine Flood
Pulaski CountyRelatively Low$10.8 millionEarthquake
Moultrie CountyRelatively Low$10.4 millionRiverine Flood
McDonough CountyVery Low$10.1 millionRiverine Flood
Jasper CountyVery Low$10.0 millionRiverine Flood
Pike CountyVery Low$9.6 millionRiverine Flood
De Witt CountyVery Low$9.5 millionRiverine Flood
Alexander CountyRelatively Low$9.5 millionEarthquake
Clark CountyVery Low$8.8 millionRiverine Flood
Ford CountyVery Low$8.8 millionRiverine Flood
Marshall CountyVery Low$8.7 millionRiverine Flood
Hancock CountyVery Low$8.4 millionRiverine Flood
Menard CountyVery Low$8.1 millionRiverine Flood
Wabash CountyVery Low$7.6 millionEarthquake
Cumberland CountyVery Low$7.4 millionRiverine Flood
Warren CountyVery Low$7.0 millionRiverine Flood
Mercer CountyVery Low$6.9 millionRiverine Flood
Gallatin CountyVery Low$6.9 millionRiverine Flood
Edwards CountyVery Low$6.2 millionRiverine Flood
Greene CountyVery Low$6.1 millionRiverine Flood
Pope CountyVery Low$5.4 millionRiverine Flood
Henderson CountyVery Low$4.9 millionRiverine Flood
Putnam CountyVery Low$4.7 millionRiverine Flood
Stark CountyVery Low$4.6 millionRiverine Flood
Calhoun CountyVery Low$4.1 millionRiverine Flood
Schuyler CountyVery Low$4.1 millionCold Wave
Scott CountyVery Low$3.7 millionRiverine Flood
Hardin CountyVery Low$3.6 millionRiverine Flood
Brown CountyVery Low$3.2 millionCold Wave

Illinois population, values and ratings

Population
12,804,624
Building value
$3,013.50 billion
Agricultural value
$21.90 billion
Modeled loss per resident
$501

Overall county risk ratings

Very Low: 37 county recordsRelatively Low: 45 county recordsRelatively Moderate: 14 county recordsRelatively High: 5 county recordsVery High: 1 county records
  • Very Low: 37
  • Relatively Low: 45
  • Relatively Moderate: 14
  • Relatively High: 5
  • Very High: 1

Illinois overall ratings describe relative county risk. Segment widths count counties, rather than residents or modeled dollars.

View chart data
RatingCount
Very Low37
Relatively Low45
Relatively Moderate14
Relatively High5
Very High1

Illinois county pages

Illinois has 1 detailed county page linked below.

US county comparisons alongside Illinois

Questions about Illinois

Which Illinois county has the largest modeled loss?

Cook County, IL leads Illinois, with about $2.42 billion in modeled expected annual loss.

Which hazard leads modeled loss in Illinois?

Riverine flooding leads Illinois, at about $2.92 billion annually.

What total loss does FEMA model for Illinois?

Illinois has about $6.41 billion in modeled expected annual loss.

What share of national loss belongs to Illinois?

The state accounts for 4.2% of national modeled loss.

How many counties appear in the Illinois table?

The Illinois table contains 102 counties and county equivalents.

Where does Illinois rank by modeled loss?

Illinois places #4 of 56 state-level entries by modeled expected annual loss.

Does the Illinois estimate predict next year?

The Illinois figure is a long-run modeled annual average, rather than a forecast for any single year.

Map of Illinois counties by modeled expected annual loss. Darker rust means larger estimates; grey means no FEMA estimate.

Illinois county modeled expected annual loss, in five within-state quantile classes.