815 Area Code, Where is Area Code 815?

Boone County Bureau County Carroll County Cook County DeKalb County Ford County Grundy County Henry County Iroquois County Jo Daviess County Kane County Kankakee County Kendall County LaSalle County Lee County Livingston County Marshall County McHenry County McLean County Ogle County Putnam County Stephenson County Whiteside County Will County Winnebago County Woodford County

Amboy Belvidere Braidwood Byron Chenoa Crest Hill Crystal Lake DeKalb Dixon Earlville East Dubuque Fairbury Freeport Fulton Galena Genoa Gilman Harvard Joliet Kankakee Lanark LaSalle Lockport Loves Park Marengo Marseilles McHenry Mendota Momence Morris Morrison Mount Carroll Oglesby Oregon Ottawa Peru Polo Pontiac Princeton Prophetstown Rochelle Rock Falls Rockford Sandwich Savanna South Beloit Spring Valley Sterling Streator Sycamore Toluca Watseka Wenona Wilmington Woodstock

Adams Adeline Afton Alden Algonquin (Township) Allen Alto Amboy (Township) Amity Apple Canyon Lake Apple River Apple River (Township) Arispie Arlington Aroma Aroma Park Artesia Ash Grove Ashkum Ashkum (Township) Ashton Ashton (Township) Aux Sable Avoca Beaver Beaverville Beaverville (Township) Bell Plain Belle Prairie Belmont Belvidere (Township) Bennington Berlin Berreman Big Grove Bolingbrook Bonfield Bonus Boone Bourbonnais Bourbonnais (Township) Braceville Braceville (Township) Bradford Bradley Brenton Brookfield Brooklyn Brookville Broughton Bruce Buckeye Buckingham Buffalo Bull Valley Bureau Bureau Junction Burlington (Township) Burritt Burton Byron (Township) Cabery Caledonia Caledonia (Township) Campus Candlewick Lake Capron Carbon Hill Cedar Point Cedarville Chadwick Channahon Channahon (Township) Charlotte Chatsworth Chatsworth (Township) Chebanse Chebanse (Township) Chemung Chemung (Township) Chenoa (Township) Cherry Cherry Grove-Shannon Cherry Valley Cherry Valley (Township) Cissna Park Clarion Clifton Clinton Clyde Coal City Coleta Coloma Como Compton Concord Concord Coral Cornell Cortland Cortland (Township) Council Hill Crescent Crescent City Creston Crystal Lawns Cullom Custer Dakota Dakota (Township) Dalzell Dana Danforth Danforth (Township) Davis Davis Junction Dayton Dayton (Township) De Pue Deer Grove Deer Park DeKalb (Township) Dement Derinda Diamond Dimmick Dixon (Township) Donovan Dorr Douglas Dover Dover (Township) Du Page Dunham Dunleith Durand Durand (Township) Dwight Dwight (Township) Eagle Eagle Point Earl East Brooklyn East Galena East Grove Eden Elizabeth Elizabeth (Township) Elkhorn Grove Elwood Emington Eppards Point Erienna Erin Esmen Essex Essex (Township) Evans Fairfield Fairhaven Fairmont Fall River Farm Ridge Fayette Felix Fenton Flagg Flanagan Flora Florence Florence Forrest Forrest (Township) Forreston Forreston (Township) Fountain Creek Fox Frankfort Frankfort (Township) Frankfort Square Franklin Franklin Grove Franklin Grove (Township) Freedom Freedom Freeport (Township) Fulton (Township) Ganeer Garden Prairie Gardner Garfield Genesee Genoa (Township) German Valley Germanville Godley Gold Goodfarm Goose Lake Grafton Grand Detour Grand Detour (Township) Grand Rapids Grand Ridge Grant Park Granville Granville (Township) Green Garden Greenfield Greenville Greenwood Greenwood (Township) Groveland Guilford Hahnaman Hall Hamilton Hanover Hanover (Township) Harlem Harlem Harmon Harmon (Township) Harrison Hartland Hebron Hebron (Township) Hennepin Hennepin (Township) Herscher Highland Hillcrest Hinckley Holiday Hills Hollowayville Homer Homer Glen Hooppole Hope Hopkins Hopkins Park Hume Indian Grove Indiantown Ingalls Park Iroquois Iroquois (Township) Irwin Jackson Jefferson Johnsburg Joliet (Township) Jordan Kaneville (Township) Kangley Kankakee (Township) Kempton Kendall Kent Kingston Kingston (Township) Kinsman Kirkland La Moille La Moille (Township) Ladd Lafayette Lake Holiday Lake Summerset 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Mount Carroll (Township) Mount Morris Mount Morris (Township) Mount Pleasant Na-Au-Say Nachusa Naplate Nebraska Nelson Nelson (Township) Nettle Creek Nevada New Bedford New Lenox New Lenox (Township) New Milford Newark Newtown Nora Nora (Township) Norman North Utica Northville Norton Nunda Odell Odell (Township) Ohio Ohio (Township) Onarga Onarga (Township) Oneco Ophir Orangeville Oregon-Nashua Osage Ottawa (Township) Otter Creek Otto Owego Owen Palmyra Panola (Township) Papineau Papineau (Township) Paw Paw Paw Paw Pearl City Pecatonica Pecatonica (Township) Pella Pembroke Peru (Township) Pierce Pigeon Grove Pike Pilot Pine Creek Pine Rock Piper City Plainfield Plainfield (Township) Plattville Pleasant Ridge Pleasant Valley Pontiac (Township) Poplar Grove Poplar Grove (Township) Portland Prairie Green Prairie Grove Preston Heights Princeton (Township) Prophetstown (Township) Ransom Rawlins Reading Reddick Reed Reynolds Rice Rich Richland Richmond Richmond (Township) Ridgeland Ridott Ridott (Township) Riley Ringwood Roberts Rock City Rock Creek-Lima Rock Grove Rock Run Rockdale Rockford (Township) Rockton Rockton (Township) Rockvale Rockville Rogers Romeoville Rooks Creek Roscoe Roscoe (Township) Round Grove Rush Rutland Rutland (Township) Salem Salina Sammons Point Sandwich (Township) Saratoga Saunemin Saunemin (Township) Savanna (Township) Scales Mound Scales Mound (Township) Scott Seatonville Selby Senachwine Seneca Seneca Serena Seward Seward Shabbona Shabbona (Township) Shannon Sheffield Sheldon Sheldon (Township) Sheridan Shirland Shorewood Silver Creek Somonauk Somonauk (Township) South Dixon South Grove South Ottawa South Wilmington Spring Spring Grove Squaw Grove St. Anne St. Anne (Township) Standard Sterling (Township) Steward Stillman Valley Stockland Stockton Stockton (Township) Strawn Sublette Sublette (Township) Sullivan Sumner Sun River Terrace Sunbury Sycamore (Township) Symerton Tampico Tampico (Township) Taylor The Galena Territory Thompson 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