FloodZoneMap.org

Illinois Flood Zones

Check a Illinois Address

Enter any Illinois address to see its FEMA flood zone designation

Flood Risk in Illinois

Illinois has areas at risk of flooding from various sources including rivers, coastal storms, and heavy rainfall. FEMA has mapped flood zones across the state to identify areas at risk.

Understanding Illinois Flood Zones

FEMA designates flood zones across Illinois using the following classifications:

AE High Risk — 1% annual chance of flooding (100-year floodplain). Insurance required for federal mortgages.

VE Very High Risk — Coastal flooding with wave action. Strictest building codes.

X (Shaded) Moderate Risk — 500-year floodplain. Insurance recommended.

X Low Risk — Outside major floodplains. Insurance optional but advisable — 20%+ of NFIP claims come from low-risk zones.

View all flood zone types →

Flood Insurance in Illinois

Properties in Illinois FEMA-designated Special Flood Hazard Areas (zones A and V) with federally backed mortgages are required to carry flood insurance through the National Flood Insurance Program (NFIP).

Even outside high-risk zones, flood insurance is recommended. NFIP claims data shows that over 20% of claims nationwide come from low and moderate-risk areas. Illinois residents can purchase flood insurance through the NFIP or private insurers.

Visit FloodSmart.gov to find an agent and get a quote.

Illinois Counties

Select a county to view local flood zone data and disaster history:

Illinois Cities

Select a city to check flood zone information:

Addison

Pop. 35,702

Algonquin

Pop. 29,700

Alsip

Pop. 19,063

Alton

Pop. 25,676

Antioch

Pop. 14,622

Arlington Heights

Pop. 77,676

Aurora

Pop. 180,542

Barrington

Pop. 10,722

Bartlett

Pop. 41,105

Bartonville

Pop. 5,945

Batavia

Pop. 26,098

Beach Park

Pop. 14,249

Beardstown

Pop. 5,951

Belleville

Pop. 42,404

Bellwood

Pop. 18,789

Belvidere

Pop. 25,339

Bensenville

Pop. 18,813

Benton

Pop. 6,709

Berkeley

Pop. 5,338

Berwyn

Pop. 57,250

Bethalto

Pop. 9,310

Bloomingdale

Pop. 22,382

Bloomington

Pop. 78,680

Blue Island

Pop. 22,558

Bolingbrook

Pop. 73,922

Boulder Hill CDP

Pop. 8,394

Bourbonnais

Pop. 18,164

Bradley

Pop. 15,419

Braidwood

Pop. 6,194

Bridgeview

Pop. 17,027

Broadview

Pop. 7,998

Brookfield

Pop. 19,476

Buffalo Grove

Pop. 43,212

Burbank

Pop. 29,439

Burr Ridge

Pop. 11,192

Cahokia

Pop. 12,096

Calumet City

Pop. 36,033

Calumet Park

Pop. 7,025

Campton Hills

Pop. 10,885

Candlewick Lake CDP

Pop. 5,115

Canton

Pop. 13,242

Carbondale

Pop. 21,857

Carlinville

Pop. 5,710

Carol Stream

Pop. 39,854

Carpentersville

Pop. 37,983

Carterville

Pop. 5,848

Cary

Pop. 17,826

Centralia

Pop. 12,182

Champaign

Pop. 88,302

Channahon

Pop. 13,383

Charleston

Pop. 17,286

Chatham

Pop. 14,377

Chester

Pop. 6,814

Chicago

Pop. 2,746,388

Chicago Heights

Pop. 27,480

Chicago Ridge

Pop. 14,433

Chillicothe

Pop. 6,128

Cicero

Pop. 85,268

Clarendon Hills

Pop. 8,702

Clinton

Pop. 7,004

Coal City

Pop. 5,705

Collinsville

Pop. 24,366

Colona

Pop. 5,045

Columbia

Pop. 10,999

Country Club Hills

Pop. 16,775

Countryside

Pop. 6,420

Crest Hill

Pop. 20,459

Crestwood

Pop. 10,826

Crete

Pop. 8,465

Crystal Lake

Pop. 40,269

Danville

Pop. 29,204

Darien

Pop. 22,011

DeKalb

Pop. 40,290

Decatur

Pop. 70,522

Deerfield

Pop. 19,196

Des Plaines

Pop. 60,675

Dixon

Pop. 15,274

Dolton

Pop. 21,426

Downers Grove

Pop. 50,247

Du Quoin

Pop. 5,827

East Alton

Pop. 5,786

East Moline

Pop. 21,374

East Peoria

Pop. 22,484

East St. Louis

Pop. 18,469

Edwardsville

Pop. 26,808

Effingham

Pop. 12,252

Elburn

Pop. 6,175

Elgin

Pop. 114,797

Elk Grove Village

Pop. 32,812

Elmhurst

Pop. 45,786

Elmwood Park

Pop. 24,521

Eureka

Pop. 5,227

Evanston

Pop. 78,110

Evergreen Park

Pop. 19,943

Fairview Heights

Pop. 16,706

Flossmoor

Pop. 9,704

Forest Park

Pop. 14,339

Fox Lake

Pop. 10,978

Frankfort

Pop. 20,296

Frankfort Square CDP

Pop. 8,968

Franklin Park

Pop. 18,467

Freeport

Pop. 23,973

Gages Lake CDP

Pop. 10,637

Galesburg

Pop. 30,052

Geneseo

Pop. 6,539

Geneva

Pop. 21,393

Genoa

Pop. 5,298

Gilberts

Pop. 8,366

Glen Carbon

Pop. 13,842

Glen Ellyn

Pop. 28,846

Glencoe

Pop. 8,849

Glendale Heights

Pop. 33,176

Glenview

Pop. 48,705

Glenwood

Pop. 8,662

Godfrey

Pop. 17,825

Grandwood Park CDP

Pop. 5,297

Granite City

Pop. 27,549

Grayslake

Pop. 21,248

Greenville

Pop. 7,083

Gurnee

Pop. 30,706

Hampshire

Pop. 7,667

Hanover Park

Pop. 37,470

Harrisburg

Pop. 8,219

Harvard

Pop. 9,469

Harvey

Pop. 20,324

Harwood Heights

Pop. 9,065

Hawthorn Woods

Pop. 9,062

Hazel Crest

Pop. 13,382

Herrin

Pop. 12,352

Hickory Hills

Pop. 14,505

Highland

Pop. 9,991

Highland Park

Pop. 30,176

Highwood

Pop. 5,074

Hillsboro

Pop. 5,902

Hillside

Pop. 8,320

Hinsdale

Pop. 17,395

Hoffman Estates

Pop. 52,530

Homer Glen

Pop. 24,543

Homewood

Pop. 19,463

Huntley

Pop. 27,740

Inverness

Pop. 7,616

Island Lake

Pop. 8,051

Itasca

Pop. 9,543

Jacksonville

Pop. 17,616

Jerseyville

Pop. 8,337

Johnsburg

Pop. 6,355

Joliet

Pop. 150,362

Justice

Pop. 12,600

Kankakee

Pop. 24,052

Kewanee

Pop. 12,509

La Grange

Pop. 16,321

La Grange Park

Pop. 13,475

LaSalle

Pop. 9,582

Lake Barrington

Pop. 5,100

Lake Bluff

Pop. 5,616

Lake Forest

Pop. 19,367

Lake Holiday CDP

Pop. 5,687

Lake Villa

Pop. 8,741

Lake Zurich

Pop. 19,759

Lake in the Hills

Pop. 28,982

Lakemoor

Pop. 6,182

Lansing

Pop. 29,076

Lemont

Pop. 17,629

Libertyville

Pop. 20,579

Lincoln

Pop. 13,288

Lincolnshire

Pop. 7,940

Lincolnwood

Pop. 13,463

Lindenhurst

Pop. 14,406

Lisle

Pop. 24,223

Litchfield

Pop. 6,605

Lockport

Pop. 26,094

Lombard

Pop. 44,476

Long Grove

Pop. 8,366

Loves Park

Pop. 23,397

Lynwood

Pop. 9,116

Lyons

Pop. 10,817

Machesney Park

Pop. 22,950

Macomb

Pop. 15,051

Mahomet

Pop. 9,434

Manhattan

Pop. 9,385

Manteno

Pop. 9,210

Marengo

Pop. 7,568

Marion

Pop. 16,855

Markham

Pop. 11,661

Maryville

Pop. 8,221

Mascoutah

Pop. 8,754

Matteson

Pop. 19,073

Mattoon

Pop. 16,870

Maywood

Pop. 23,512

McHenry

Pop. 27,135

Melrose Park

Pop. 24,796

Mendota

Pop. 7,061

Metropolis

Pop. 5,969

Midlothian

Pop. 14,325

Milan

Pop. 5,097

Minooka

Pop. 12,758

Mokena

Pop. 19,887

Moline

Pop. 42,985

Monee

Pop. 5,128

Monmouth

Pop. 8,902

Montgomery

Pop. 20,262

Monticello

Pop. 5,941

Morris

Pop. 14,163

Morton

Pop. 17,117

Morton Grove

Pop. 25,297

Mount Carmel

Pop. 7,015

Mount Prospect

Pop. 56,852

Mount Vernon

Pop. 14,600

Mount Zion

Pop. 6,019

Mundelein

Pop. 31,560

Murphysboro

Pop. 7,093

Naperville

Pop. 149,540

New Lenox

Pop. 27,214

Niles

Pop. 30,912

Normal

Pop. 52,736

Norridge

Pop. 15,251

North Aurora

Pop. 18,261

North Chicago

Pop. 30,759

North Riverside

Pop. 7,426

Northbrook

Pop. 35,222

Northfield

Pop. 5,751

Northlake

Pop. 12,840

O'Fallon

Pop. 32,289

Oak Brook

Pop. 8,163

Oak Forest

Pop. 27,478

Oak Lawn

Pop. 58,362

Oak Park

Pop. 54,583

Olney

Pop. 8,701

Orland Hills

Pop. 6,893

Orland Park

Pop. 58,703

Oswego

Pop. 34,585

Ottawa

Pop. 18,840

Palatine

Pop. 67,908

Palos Heights

Pop. 12,068

Palos Hills

Pop. 18,530

Pana

Pop. 5,199

Paris

Pop. 8,291

Park City

Pop. 7,885

Park Forest

Pop. 21,687

Park Ridge

Pop. 39,656

Pekin

Pop. 31,731

Peoria

Pop. 113,150

Peoria Heights

Pop. 5,908

Peru

Pop. 9,896

Pinckneyville

Pop. 5,066

Pingree Grove

Pop. 10,365

Plainfield

Pop. 44,762

Plano

Pop. 11,847

Pontiac

Pop. 11,150

Pontoon Beach

Pop. 5,876

Poplar Grove

Pop. 5,049

Posen

Pop. 5,632

Princeton

Pop. 7,832

Prospect Heights

Pop. 16,058

Quincy

Pop. 39,463

Rantoul

Pop. 12,371

Richton Park

Pop. 12,775

River Forest

Pop. 11,717

River Grove

Pop. 10,612

Riverdale

Pop. 10,663

Riverside

Pop. 9,298

Robinson

Pop. 7,150

Rochelle

Pop. 9,446

Rock Falls

Pop. 8,789

Rock Island

Pop. 37,108

Rockford

Pop. 148,655

Rockton

Pop. 7,863

Rolling Meadows

Pop. 24,200

Romeoville

Pop. 39,863

Roscoe

Pop. 10,983

Roselle

Pop. 22,897

Round Lake

Pop. 18,721

Round Lake Beach

Pop. 27,252

Round Lake Park

Pop. 7,680

Salem

Pop. 7,282

Sandwich

Pop. 7,221

Sauk Village

Pop. 9,921

Savoy

Pop. 8,857

Schaumburg

Pop. 78,723

Schiller Park

Pop. 11,709

Shiloh

Pop. 14,098

Shorewood

Pop. 18,186

Silvis

Pop. 8,003

Skokie

Pop. 67,824

South Barrington

Pop. 5,077

South Beloit

Pop. 7,989

South Elgin

Pop. 23,865

South Holland

Pop. 21,465

Spring Grove

Pop. 5,487

Spring Valley

Pop. 5,582

Springfield

Pop. 114,394

St. Charles

Pop. 33,081

Staunton

Pop. 5,054

Steger

Pop. 9,584

Sterling

Pop. 14,764

Stickney

Pop. 7,110

Streamwood

Pop. 39,577

Streator

Pop. 12,500

Sugar Grove

Pop. 9,278

Summit

Pop. 11,161

Swansea

Pop. 14,386

Sycamore

Pop. 18,577

Taylorville

Pop. 10,506

Tinley Park

Pop. 55,971

Troy

Pop. 10,960

University Park

Pop. 7,145

Urbana

Pop. 38,336

Vandalia

Pop. 7,458

Vernon Hills

Pop. 26,850

Villa Park

Pop. 22,263

Volo

Pop. 6,122

Warrenville

Pop. 13,553

Washington

Pop. 16,071

Waterloo

Pop. 11,013

Wauconda

Pop. 14,084

Waukegan

Pop. 89,321

West Chicago

Pop. 25,614

West Dundee

Pop. 7,686

West Frankfort

Pop. 7,275

Westchester

Pop. 16,892

Western Springs

Pop. 13,629

Westmont

Pop. 24,429

Wheaton

Pop. 53,970

Wheeling

Pop. 39,137

Willow Springs

Pop. 5,857

Willowbrook

Pop. 9,236

Wilmette

Pop. 28,170

Wilmington

Pop. 5,664

Winfield

Pop. 9,835

Winnetka

Pop. 12,744

Winthrop Harbor

Pop. 6,705

Wood Dale

Pop. 14,012

Wood River

Pop. 10,464

Woodridge

Pop. 34,158

Woodstock

Pop. 25,630

Worth

Pop. 10,970

Yorkville

Pop. 21,533

Zion

Pop. 24,655