Illinois Counties  Information

Place your mouse over the county of your choice to find out information about that county.

  • Population: 67,103

  • John Wood Mansion

  • Coca-Cola Bottling Company Building

  • Log Cabin Village

  • All Wars Museum

  • Downtown Quincy Historic District

Adams County

  • Population: 8,238

  • American Farm Heritage Museum

  • De Moulin Museum

  • Kingsbury Park District

  • Governor Bond Lake

Alexander County

  • Population: 17,768

  • American Farm Heritage Museum

  • De Moulin Museum

  • Kingsbury Park District

  • Governor Bond Lake

Bond County

  • Population: 54,165

  • Summerfield Zoo

  • Frank Lloyd Wright's Laurent House

  • Poplar Grove Vintage Wings

  • Belvidere Park

  • Lampert-Wildflower House

Boone County

  • Population: 6,937

  • Siloam Springs State Park

  • Mount Sterling Commercial Historic

  • Ridge View Winery

Brown County

  • Population: 34,978

  • Hennepin Canal Parkway State Park

  • Mautino State Fish and Wildlife Area

  • Donnelley Wildlife Area

  • Red Covered Bridge

  • Owen Lovejoy House

Bureau County

  • Population: 5,089

  • Pere Marquette State Park

  • Two Rivers National Wildlife Refuge

  • The McCully Heritage Project

  • Center For American Archeology Museum

Calhoun County

  • Population: 15,387

  • Mississippi Palisades State Park

  • Savanna-Sabula Bridge Upper Mississippi River Nwfr-savanna District

  • Thomson Causeway Recreation Area

Carroll County

  • Population: 13,642

  • Jim Edgar Panther Creek State Fish and Wildlife

  • Meredosia National Wildlife Refuge

  • Sanganois State Fish and Wildlife Area

Cass County

  • Population: 201,081

  • Krannert Art Museum

  • Orpheum Children's Science Museum

  •  Spurlock Museum

  • Lake of the Woods Forest Preserve

Champaign County

  • Population: 34,800

  • Kitchell Park

  • Louis Jehle House

  • Sangchris Lake State Park

  • Sangchris Lake

Christian County

  • Population: 16,335

  • Lincoln Trail State Park

  • World's Largest Mailbox

  • World's Largest Rocking Chair

  • Mill Creek Lake and Park

Clark County

  • Population: 13,815

  • Little Toot Railroad

  • Shriver House

  • Charley Brown Park

Clay County

  • Population: 37,762

  • General Dean Bridge

  • Carlyle Dam

  • Crooked Creek Winery

  • James C. Twiss House

  • South Shore State Park

  • Carlyle Lake

Clinton County

  • Population: 53,873

  • Fox Ridge State Park

  • Lincoln Log Cabin State Historic Site

  • Ashmore Estates

  • Alexander Briggs House

Coles County

  • Population: 5,194,675

  • Millennium Park

  • Willis Tower

  • Navy Pier

  • Cloud Gate

  • Skydeck Chicago

  • Shedd Aquarium

Cook County

  • Population: 19,817

  • Crawford County Forest Preserve

  • John B. Harper House Historical Place

  • Fort Lamotte Historical Marker

  • Heath Museum & Confectionery

Crawford County

  • Population: 11,048

  • Cameo Vineyards

  • Thornton Ward Estate

  • Lake Mattoon

Cumberland County

  • Population: 105,160

  • Ellwood House Museum

  • Sycamore Historic District

  • Afton Forest Preserve

  • Russell Woods Forest Preserve

DeKalb County

  • Population: 16,561

  • Clinton Lak

  •  Weldon Springs State Park

  • C.H. Moore Homestead DeWitt County Museum

  • Weldon Springs Lake

DeWitt County

  • Population: 19,980

  • Walnut Point State Park

  • Aikman Wildlife Adventure

  • Hippie Memorial

  • The Streibich Blacksmith Shop

Douglas County

  • Population: 916,924

  • The Morton Arboretu

  • Cosley Zoo

  • Naper Settlement

  • DuPage Children's Museum

  • Blackwell Forest Preserve

DuPage County

  • Population: 18,576

  • L&A Family Farms

  • Asher Morton Farmstead

  • Twin Lakes Park

  • Centennial Park

Edgar County

  • Population: 6,721

  • Edwards County Courthouse Square

  • Albion Library

  • Edwards County Historical Society Museum

Edwards County

  • Population: 32,242

  • Wildcat Hollow State Habitat Area

  • Rock Cave Nature Preserve

  • MY Garage Corvette Museum

  • Ballard Nature Center

Effingham County

  • Population: 22,140

  • Floyd and Glenora Dycus House

  • Kaskaskia Dragon

  • Vandalia State House

  • Ramsey Lake State Park

Fayette County

  • Population: 14,081

  • Alfred Phillips House

  • Loda Cemetery Prairie Nature Preserve

  • Paxton Park District

Ford County

  • Population: 39,561

  • Historic Jail Museum

  • West Franklin Historical

  • Wayne Fitzgerrell State Park

  • Rend Lake Fish & Wildlife

Franklin County

  • Population: 37,069

  • Easley Pioneer Museum

  • Browns Oakridge Zoo

  • Emiquon Preserve

  • Edward Hamer House

Fulton County

  • Population: 5,589

  • High Knob Lookout

  • Illinois Salines National Historic Site

  • Pounds Hollow

  • John Marshall House Museum

  • Rim Rock Recreation Trail

Gallatin County

  • Population: 18,576

  • L&A Family Farms

  • Asher Morton Farmstead

  • Twin Lakes Park

  • Centennial Park

Greene County

  • Population: 6,721

  • Edwards County Courthouse Square

  • Albion Library

  • Edwards County Historical Society Museum

Grundy County

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  • Population: 8,457

  • Ten Mile Creek State Fish And Wildlife Area

  • L P Dolan Lake

  • Chalon Guard and Emna Blades Cloud House

  • Hamilton County State Fish & Wildlife Area

Hamilton County

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  • Population: 19,104

  • Nauvoo Historic District

  • Carthage Jail

  • Joseph & Emma Smith Mansion House

  • ​Joseph Smith's Red Brick Store

  • Nauvoo House

Hancock County

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  • Population: 4,320

  • Battery Rock

  • Hicks Dome

  • American Fluorite Museum

  • Shawnee National Forest

  • Cave In Rock State Park

Hardin County

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  • Population: 7,3331

  • Lock and Dam Number 18

  • Horse and Buggy Museum

  • Starr's Cave Nature Center

  • Alexis Phelps House

Henderson County

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  • Population: 50,486

  • West Water Tower and Ground Storage Tank

  • Bishop Hill Heritage Association

  • Bishop Hill Historic Site

  • Niabi Zoo

Henry County

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  • Population: 29,718

  • Courthouse Museum

  • Watseka Union Depot

  • Iroquois County State Wildlife Area

  • St Mary's Catholic Church

Iroquois County

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  • Population: 60,218

  • Little Grand Canyon

  • Pomona Natural Bridge

  • The Science Center

  • Giant City State Park

Jackson County

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  • Population: 9,698

  • Prairie Ridge St Natural Area

  • Newton Lake Conservation Area

  • Sam Parr State Park

  • Peterson Park

Jasper County

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  • Population: 38,827

  • Jefferson County Historical Village

  • C. H. Judd House

  • Mitchell Museum at Cedarhurst

  • Aquatic Zoo Water Park

  • Ten Mile Creek State Fish And Wildlife Area

Jefferson County

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  • Population: 22,985

  • Pere Marquette State Park

  • Elsah Historic District

  • Hamilton Primary School

  • Grafton SkyTour

Jersey County

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  • Population: 22,678

  • Ulysses S. Grant Home

  • Apple River Canyon State Park

  • Dowling House

  • Horseshoe Mound Preserve

  • Old Blacksmith Shop

Jo Daviess County

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  • Population: 12,582

  • Ferne Clyffe State Park

  • Cache River State Natural Area

  • Tunnel Hill State Trail

  • Dutchman Lake

  • Camp Ondessonk

Johnson County

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  • Population: 515,269

  • Santa's Village Azoosment & Water Park

  • Phillips Park Zoo

  • Blackberry Farm

  • Phillips Park Zoo

  • Fabyan Villa Museum & Japanese Garden

Kane County

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  • Population: 113,449

  • B Harley Bradley House

  • Hunter-Hattenburg House

  • Kankakee County Museum

  • Warren Hickox House

  • Charles E. Swannell House

Kankakee County

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  • Population: 114,736

  • Farnsworth House

  • Raging Waves Waterpark

  • Silver Springs State Park

  • Plano Church of God

  • Hudson Crossing Park

Kendall County

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  • Population: 52,919

  • Discovery Depot Children's Museum

  • Galesburg Railroad Museum

  • Snakeden Hollow - State Fish & Wildlife Area

  • National Railroad Hall of Fame

Knox County

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  • Population: 703,462

  • Six Flags Great America

  • Illinois Beach State Park

  • Volo Auto Museum

  • Independence Grove Forest Preserve

  • Chain O'Lakes

Lake County

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  • Population: 113,924

  • Starved Rock State Park

  • Hegeler-Carus Mansion

  • Matthiessen State Park

  • I&M Canal National Heritage Area

  • Lock 14

LaSalle County

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  • Population: 16,833

  • Red Hills State Park

  • Lincoln Trail State Memorial

  • Chauncey Marsh Nature Preserve

  • Twin Lakes

Lawrence County

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  • Population: 36,031

  • Ronald Reagan Boyhood Home

  • Franklin Creek State Natural Area

  • Green River State Wildlife Management Area

  • Amboy Depot Museum

Lee County

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  • Population: 38,950

  • Route 66 Association of Illinois

  • Pontiac Oakland Auto Museum

  • Livingston County War Museum

  • International Walldog Mural & Sign Art Museum

Livingston County

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  • Population: 30,305

  • Theodore H. O. Mattfeldt House

  • Lincoln Heritage Museum

  • Railsplitter Covered Wagon

  • Downey Building

  • Lincoln Courthouse Square Historic District

Logan County

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  • Population: 110,768

  • Scovill Zoo

  • Children's Museum of Illinois

  • Lincoln Trail Homestead

  • Allerton Park & Retreat Center

Macon County

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  • Population: 47,765

  • Henrys Rabbit Ranch

  • Beaver Dam State Park

  • Soulsby Service Station

  • J. L. Robinson General Store

  • Mother Jones Monument

Macoupin County

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  • Population: 269,282

  • Lewis and Clark State Historic Site

  • Monks Mound

  • National Great Rivers Museum

  • McPike Mansion

  • Worlds Largest Catsup Bottle

  • Collinsville Aqua Park

Madison County

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  • Population: 39,437

  • Tunnel Hill State Trail

  • Crab Orchard National Wildlife Refuge

  • Williamson County Historical Museum

  • Willis Allen House

  • John Dupont House

Marion County

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  • Population: 12,640

  • Robert Waugh House

  • Oak Bluff Savanna Nature Preserve

  • Billsbach Lake

Marshall County

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  • Population: 14,666

  • Chautauqua National Wildlife Refuge

  • Dickson Mounds State Museum

  • Rockwell Mound Historic Site

  • Havana Water Tower

  • Havana Nature Center

Mason County

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  • Population: 15,429

  • Superman Statue

  • Super Museum

  • Shawnee National Forest

  • Mermet Lake State Conservation Area

  • Dorothy Miller Park

Massac County

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  • Population: 32,612

  • Argyle Lake State Park

  • Moses King Brick and Tile Works

  • Western Illinois Museum

  • Lakeview Nature Center

McDonough County

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  • Population: 308,760

  • Illinois Railway Museum

  • Glacial Park Conservation Area

  • Onesti's Wild West Town

  • Three Oaks Recreation Area

McHenry County

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  • Population: 169,572

  • Miller Park Zoo

  • Children's Discovery Museum

  • McLean County Museum of History

  • David Davis Mansion

  • Prairie Aviation Museum

McLean County

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  • Population: 12,705

  • Lincoln's New Salem

  • Starhill Forest Arboretum

  • Col. Matthew Rogers Building

Menard County

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  • Population: 16,434

  • Dam and Lock Number 17

  • Mercer County Jail

  • Toolesboro Indian Mounds

  • Country Corner Farm Market and Pumpkin

  • Big River State Forest

Mercer County

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  • Population: 32,957

  • Salt Lick Point Land And Water Reserve

  • Jefferson Barracks Bridge

  • Fults Hill Prairie Nature Preserve

  • Cliff Cave County Park

Monroe County

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  • Population: 30,104

  • Litchfield Museum and Route 66 Welcome Center

  • Coffeen Lake State Fish & Wild

  • Freeman-Brewer-Sawyer House

  • Bremer Sanctuary

  • Arches Rail Trail

Montgomery County

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  • Population: 35,547

  • Waverly Lake

  • Beecher Hall

  • Jacksonville Historic District

  • Prairieland Heritage Museum

  • Big Eli Ferris Wheel

  • Emma Mae Leonhard Wildlife Sanctuary

Morgan County

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  • Population: 14,846

  • Wolf Creek State Park

  • The Great Pumpkin Patch

  • Two Story Outhouse

  • Kaskaskia River State Fish and Wildlife Management 

Moultrie County

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  • Population: 53,497

  • Castle Rock State Park

  • White Pines Forest State Park

  • Lowden State Park

  • John Deere Historic Site

  • Rochelle Railroad Park

  • Black Hawk Statue

Ogle County

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  • Population: 186,494

  • Wildlife Prairie Park

  • Peoria Zoo

  • Peoria Riverfront Museum

  • Luthy Botanical Garden

  • Forest Park Nature Center

Peoria County

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  • Population: 22, 350

  • Perry County Jail Museum

  • Pyramid State Park Captain Unit

  • Pyramid State Recreation Area

Perry County

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  • Population: 16,729

  • Monticello Railway Museum

  • Allerton Park & Retreat Center

  • Monticello Courthouse Square Historic District

  • Bryant Cottage Historic Site

  • Sunken Garden

Piatt County

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  • Population: 16,430

  • Great River National Wildlife Refuge

  • New Philadelphia Town National Historic Site

  • John Shastid House

  • Naples Russell Mound 8 - Zelph Mound

Pike County

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  • Population: 4,470

  • Bell Smith Springs Scenic Area

  • Burden Falls

  • Dixon Springs State Park

  • Shawnee National Forest

  • Shawnee National Forest

Pope County

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  • Population: 6,161

  • Cache River State Natural Area

  • Cypress Creek National Wildlife Refuge

  • Little Black Slough

  • Axe Lake Swamp State Nature Preserve

Pulaski County

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  • Population: 6,006

  • Dixon Waterfowl Refuge

  • Edward Pulsifer House

  • Senachwine Lake

  • Hall Township Echo Bluff Park

  • Miller-Anderson Woods State Nature Preserve

Putnam County

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  • Population: 33,476

  • Fort de Chartres State Historic Site

  • Fort Kaskaskia State Historic Site

  • Frederick Weistar House

  • Peabody River State Fish and Wildlife Area

  • Fults Hill Prairie State Natural Area

Randolph County

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  • Population: 16,233

  • Carnegie Building

  • Larchmound

  • Olney City Park

  • East Fork Lake

Richland County

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  • Population: 147,546

  • John Deere Pavilion

  • Niabi Zoo

  • Quad City Botanical Center

  • Figge Art Museum

  • Black Hawk State Historic Site

  • Rock Island Arsenal Museum

Rock Island County

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  • Population: 24,913

  • Garden of the Gods

  • Carrier Mills Archaeological District

  • Shawnee National Forest

  • Stone Face

  • Saline County Area Museum

Saline County

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  • Population: 197,465

  • Lincoln Home

  • Abraham Lincoln Presidential Library

  • Dana Thomas House

  • Lincoln Monument Association

  • Illinois State Museum

  • Washington Park

Sangamon County

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  • Population: 7,544

  • Weinberg-King State Park

  • Schuyler County Courthouse

  • White Oak Hall

  • Schuy-Rush Park

Schuyler County

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  • Population: 5,355

  • Naples Russell Mound 8 - Zelph Mound

  • Winchester Historic District

  • Ray Norbut State Fish & Wildlife

Scott County

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  • Population: 22,363

  • Horace M. Tallman House

  • Wolf Creek State Park

  • Lake Shelbyville

  • Hidden Springs State Forest

Shelby County

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  • Population: 270,056

  • Eads Bridge

  • National Shrine of Our Lady of the Snows

  • Gateway Geyser

  • Cahokia Mounds State Historic Site

  • Citizens Park

St. Clair County

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  • Population: 5,994

  • Caterpillar Visitors Ccenter

  • Wheels o' Time

  • Francis Park

  • Hornbaker Gardens

Stark County

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  • Population: 47,711

  • Krape Park

  • Blackhawk Battlefield Park

  • John H. Addams Homestead

  • Silver Creek & Stephenson Railroad & Museum

Stephenson County

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  • Population: 135,394

  • Caterpillar Visitors Center

  • Peoria Riverfront Museum

  • Spring Lake State Fish and Wildlife Area

  • Mineral Springs Park

Tazewell County

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  • Population: 17,808

  • Giant City State Park

  • Shawnee Bluffs Canopy

  • Trail of Tears State Forest & Park

  • Shawnee National Forest

Union County

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  • Population: 81,625

  • Vermilion County War Museum

  • Lake Vermilion

  • Kennekuk Cove County Park

  • Middle Fork State Fish and Wildlife Area

  • Kennekuk County Park

Vermilion County

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  • Population: 11,947

  • Beall Woods State Park

  • Beall-Orr House

  • Conservation Lake

  • Broad Pond

Wabash County

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  • Population: 17,707

  • Wyatt Earp Birthplace

  • Warren County History Museum

  • Blackthorn Hill Nature Preserve

Warren County

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  • Population: 14,716

  • Poos Museum

  • Washington County Lake

  • Louisville and Nashville Depot

  • Washington County State Recreation Area

Washington County

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  • Population: 16,760

  • House at 502 SE 4th Street

  • Hanna House Museum

  • Leo French Park

  • Sam Dale Lake

Wayne County

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  • Population: 14,665

  • Robinson-Stewart House

  • L. Haas Store

  • Bieker-Wilson Village Site

  • Old Morrison Mill

White County

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  • Population: 58,498

  • H. C. Pitney Variety Store Building

  • Sinnissippi Mounds Historic Site

  • Ronald Reagan's Birthplace

  • Dillon Home Museum

  • Col. Edward N. Kirk House

Whiteside County

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  • Population: 677,560

  • Gemini Giant

  • Old Joliet Prison

  • Knoch Knolls Nature Center

  • Pilcher Park Nature Center

  • Pelican Harbor Indoor/Outdoor Aquatic 

Will County

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  • Population: 66,357

  • Williamson County Historical Museum

  • Crab Orchard National Wildlife Refuge

  • Mandala GardensLake of Egypt

Williamson County

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  • Population: 295,266

  • Anderson Japanese Gardens

  • Discovery Center Museum

  • Midway Village Museum

  • Burpee Museum of Natural History

  • Tinker Swiss Cottage Museum and Gardens

Winnebago County

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  • Population: 38,664

  • Joseph Schertz House

  • Black Partridge Park

  • Illinois Central Railroad

  • Ronald Reagan Museum

  • Metamora Courthouse

Woodford County