Indiana 31 Beverly Shores 31 Burns Harbor 31 Cedar Lake 31 Chesterton 31 Crown Point 31 Demotte 31 Dune Acres 31 Duneland Beach 31 Dyer 51 East Chicago 45 Gary 31 Griffith 51 Hammond 31 Hebron 31 Highland 31 Hobart 31 Jasper 31 Kingsbury 31 Kingsford Heights 31 Lake 31 LaPorte 31 Lake Station 31 Lake of Four Seasons 31 Long Beach 31 Lowell 31 Merrillville 31 Michiana Shores 31 Michigan City 31 Munster 31 New Chicago 31 Ogden Dunes 31 Portage 31 Porter 31 Pottawatomie Park 31 Schererville 31 Shorewood 31 St. John 31 The Pines 31 Trail Creek 31 Valparaiso 31 Whiting 31 Winfield

Communities A-C 38/53 Addison 53 Algonquin 53 Alsip 53 Antioch 41 Arlington Heights 53 Aroma Park 53 Aroma Township 53 Ashkum 53 Aurora 53 Bannockburn 48 Barrington 53 Barrington Hills 41 Bartlett 53 Batavia 53 Beach Park 38 Bedford Park 53 Beecher 38 Bellwood 38 Bensenville 38 Berkeley 38 Berwyn 38 Bloomingdale 53 Blue Island 38 Bolingbrook 53 Boulder Hill 53 Bourbonnais 53 Bradley 38 Braidwood 38 Brandywine 38 Bridgeview 53 Bristol 38 Broadview 38 Brookfield 37 Buffalo Grove 38 Burbank 53 Burnham 38 Burr Ridge 53 Calumet City 53 Calumet Park 38 Carbon Hill 38 Carol Stream 53 Carpentersville 53 Cary 38 Channahon 53 Chebanse 10/40 Chicago (NW side) 10/40 Chicago (NE, SE, SW) 53 Chicago Heights 53 Chicago Ridge 38 Cicero 38 Clarendon Hills 53 Clifton 38 Coal City 53 Country Club Hills 38 Countryside 38 Crest Hill 53 Creston 53 Crestwood 53 Crete 53 Crystal Lake 53 Custer Park

Communities D-G 38 Darien 48 Deer Park 53 Deerfield 53 Deerfield (Unincorp.) 53 DeKalb 53 Delmar Woods 41 Des Plaines 38 Diamond 38 Diamond Lake 53 Dixmoor 53 Dolton 38 Downers Grove 53 East Dundee 53 East Hazel Crest 53 Elgin 37 Elk Grove Village 38 Elmhurst 38 Elmwood Park 38 Evanston 53 Evergreen Park 53 Flossmoor 53 Ford Heights 38 Forest Park 38 Forest View 53 Fort Sheridan 53 Four Lakes Village 53 Fox Lake 53 Fox River Grove 36 Fox River Valley Garden 38 Frankfort 38 Franklin Park 53 Geneva 53 Glen Ellyn 53 Glencoe 38 Glendale Heights 41 Glenview 41 Glenview Naval Air Base 53 Glenwood 41 Golf 38 Goose Lake 53 Grayslake 53 Great Lakes Naval Center 53 Green Oaks 38 Grundy 53 Gurnee

Communities H-K 53 Hanesville 41 Hanover Park 53 Harvey 38 Harwood Heights 48 Hawthorn Woods 53 Hazel Crest 53 Herscher 53 Hickory Hills 53 Highland Park 53 Highwood 53 Hillcrest 38 Hillside 38 Hinsdale 38 Hodgkins 37 Hoffman Estates 53 Holiday Hills 38 Homer 53 Hometown 53 Homewood 53 Huntley 48 Indian Creek 38 Indian Head Park 39 Ingleside 37 Inverness 37 Iroquois 53 Island Lake 38 Itasca 53 Johnsburg 38 Joliet 38 Justice (uninc.) 53 Kane 53 Kankakee 53 Kendall 53 Kenilworth 48 Kildeer

Communities L-N 38 LaGrange 38 LaGrange Park 53 Lake 48 Lake Barrington 48 Lake Barrington Shore 53 Lake Bluff 53 Lake Forest 53 Lake Holiday 53 Lake in the Hills 53 Lake Villa 48 Lake Zurich 53 Lakemoore 53 Lakewood 53 Lansing 38 Lemont 53 Libertyville 53 Lily Lake 36 Lilymoore 53 Limestone Township 53 Lincolnshire 38 Lincolnwood 53 Lindenhurst 53 Lisle 38 Lockport 38 Lombard 48 Long Grove 37/53 Lynwood 38 Lyons 38 Lyons Township 38 Maine 53 Manteno 53 Markham 53 Matteson 38 Maywood 38 McCook 53 McCullon Lake 53 McHenry 53 McHenry Shores 38 Melrose Park 53 Merrionette Park 53 Midlothian 38 Minooka 38 Mokena 53 Monee 53 Montgomery 38 Morris 38 Morton Grove 41 Mt. Prospect 53 Mundelein 48 N. Barrington /option> 53 Naperville 38 New Lenox 38 New Trier 38 Niles 38 Norridge 53 North Aurora 53 North Chicago 38 North Riverside 41 Northbrook 38 Northfield 38 Northlake

Communities O-R 38 Oak Brook 38 Oak Brook Terrace 53 Oak Forest 53 Oak Lawn 38 Oak Park 53 Oakwood Hills 53 Ogle 53 Olympia Fields 53 Orland Hills 53 Orland Park 53 Oswego 53 Otto Township 37/38 Palatine 38 Palos Heights 53 Palos Hills 53 Palos Park 53 Park City 53 Park Forest 41 Park Ridge 53 Peotone 53 Phoenix 38 Plainfield 53 Plano 53 Port Barrington 53 Posen 53 Prairie Grove 41 Prospect Heights 38 Proviso 53 Richton Park 53 Riverdale 38 River Forest 38 River Grove 38 Riverside 53 River Woods 53 Robbins 53 Rochelle 38 Rockdale 37 Rolling Meadows 38 Romeoville 38 Roselle 38 Rosemont 53 Round Lake 53 Round Lake Beach 53 Round Lake Heights 53 Round Lake Park

Communities S-V 53 Sandwich 53 Sauk Village 41 Schaumburg 38 Schiller Park 38 Shorewood 41 Skokie 53 Sleepy Hollow 53 South Barrington 53 South Chicago Heights 53 South Elgin 53 South Holland 53 St. Anne 53 St. Charles 53 Steger 38 Stickney 38 Stone Park 41 Streamwood 38 Summit 53 Sun River Terrace 53 Sycamore 53 Third Lake 53 Thornton 53 Timber Creek Trailer Park 53 Tinley Park 41 Tower Lakes 38 Troy 53 University Park 48 Vernon Hills 53 Villa Park 53 Volo

Communities W-Z 53 Wadsworth 53 Warrenville 53 Wauconda 53 Waukegan 53 West Chicago 53 West Dundee 38 Westchester 38 Western Springs 38 Westmont 38 Wheatland 53 Wheaton 41 Wheeling 53 Wildwood 38/53 Will 38 Willowbrook 38 Willow Springs 38 Wilmette 38 Wilmington 53 Winfield 53 Winnetka 53 Winthrop Harbor 53 Wonder Lake 38 Wood Dale 38 Woodridge 53 Woodstock 53 Worth 53 Yorkville 53 Zion