312 Area Code Details

State: IL
Area: Illinois, IL
Cities: Chicago, Crystal Lake, Rolling Meadows, Blue Island, Wheeling, Oak Brook, Cicero, Clarendon Hills, Western Springs, Buffalo Grove, Prospect Heights, Hinsdale, Northbrook, Darien, Plainfield, Medinah, Schaumburg, Brookfield, Elmwood Park, Park Ridge, Des Plaines, Harwood Heights, Champaign, Aurora, Barrington, Lincolnshire, Oak Lawn, Oak Park, Lombard, Indianapolis, Algonquin, Villa Park, Evanston, Glenview, Deerfield, Bensenville, Arlington Heights, Country Club Hills, Lake Zurich, Willowbrook
100-199 | 200-299 | 300-399 | 400-499 | 500-599 | 600-699 | 700-799 | 800-899 | 900-999

Numbers (312)-1xx-xxxx