Highest risk cities in Illinois
Highest flood risk cities in Illinois
Ranked city list for flood-prone areas. Open any city to view local risk details and live outlook context.
State average
Flood score
48/100
Updated Sun, Feb 22, 4:16 PM.
More state ranking pages
Highest overall weather risk citiesHighest wind risk citiesHighest lightning risk citiesHighest tornado risk citiesHighest hail risk citiesRanked cities
Top 25 cities by flood score.
#1
Round Lake, IL
17 points above the state average
#2
Wauconda, IL
17 points above the state average
#3
Libertyville, IL
16 points above the state average
#4
Vernon Hills, IL
16 points above the state average
#5
Carbondale, IL
15 points above the state average
#6
East Moline, IL
15 points above the state average
#7
Buffalo Grove, IL
11 points above the state average
#8
Prospect Heights, IL
11 points above the state average
#9
Wheeling, IL
11 points above the state average
#10
Morris, IL
10 points above the state average
#11
Decatur, IL
9 points above the state average
#12
Bolingbrook, IL
8 points above the state average
#13
McHenry, IL
8 points above the state average
#14
Bartlett, IL
6 points above the state average
#15
Charleston, IL
6 points above the state average
#16
Moline, IL
6 points above the state average
#17
Mundelein, IL
5 points above the state average
#18
Frankfort, IL
4 points above the state average
#19
Lincoln, IL
4 points above the state average
#20
Sterling, IL
3 points above the state average
#21
Homer Glen, IL
2 points above the state average
#22
Lemont, IL
2 points above the state average
#23
Lockport, IL
2 points above the state average
#24
Naperville, IL
2 points above the state average
#25
Sycamore, IL
2 points above the state average
How this ranking works
Rankings use HomeRiskIQ weather risk data and statewide score snapshots.
Scores are normalized to a 0-100 scale and shown against the state average for context.
City entries link to hazard-specific pages where available, otherwise to the city overview.