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Updated Jan 02, 2010Area Code 773
  1. "E" is Eastern Time Zone, "C" is Central Time Zone, "M" is Mountain Time Zone, and "P" is Pacific Time Zone. Occasionally, an area code will fall in more than one time zone. In this case, the abbreviation is a combination of the previous abbreviations. Some area codes are shown with time zones referencing Universal Coordinated Time (UTC).
  2. Additional technical status can be retrived from the North American Numbering Plan Administration on the 773 area code specific link here.
Area Code773 (area code map)
LocationIllinois
Dates and historical informationArea code 773 went live into service on October 12, 1996.  It was formed as a subdivision of the 312 area code.
Growth StatusThis area code went live on October 12, 1996 as an "overlay" on the 872 area code.  This means the 773 area code was created in part to provide more telephone numbers for people in the 872 area code area. In other words, 773 is a subdivision of the 872 area code. Planning is underway and notices have been distributed regarding the area code subdivision. 
Technical Status 2Area code 773 is currently live and in service.
Time Zone(s) 1C
LATA numbers served358
Number of rate centers served11
List of rate centersCHICGOZN01, CHICGOZN03, CHICGOZN07, CHICGOZN09, CHICGOZN06, CHICGOZN10, CHICGOZN04, CHICGOZN08, CHICGOZN05, CHICGOZN11, CHICGOZN02
Number of major cities served37
Names of major cities served (ZIP code)(00000), Chicago (60616), Twenty Second Street (60616), Chicago (60641), Chicago (60605), Chicago (60633), Burnham (60633), Hegewisch (60633), Chicago (60637), Jackson Park (60637), Chicago (60617), John Buchanan (60617), Chicago (60624), Mary Alice Henry (60624), Chicago (60620), Chicago (60643), Calumet Park (60643), Morgan Park (60643), Chicago (60647), Roberto Clemente (60647), Bedford Park (60501), Summit Argo (60501), Argo (60501), Summit (60501), Bedford Pk (60501), Summit-argo (60501), Chicago (60639), Cragin (60639), Chicago (60804), Cicero (60804), Chicago (60657), Graceland (60657), Chicago (60609), Stock Yards (60609), Chicago (60611), Fort Dearborn (60611), Ontario Street (60611), Chicago (60640), Chicago (60623), Otis Grant Collins (60623), Chicago (60628), Roseland (60628), Chicago (60644), Rev.milton R.brunson Station (60644), Chicago (60626), Rogers Park (60626), Chicago (60618), Daniel J Doffyn (60618), Chicago (60653), Henry Mcgee (60653), Chicago (60606), Chicago (60629), Bedford Park (60629), Bedford Pk (60629), Chicago Lawn (60629), Park Ridge (60068), Chicago (60636), Ogden Park (60636), Chicago (60631), Norwood Park (60631), Elk Grove Village (60007), Elk Grove Vlg (60007), River Grove (60171), Des Plaines (60016), Chicago (60666), Schiller Park (60176)
Number of exchanges served767
List of exchanges served773-201-xxxx, 773-202-xxxx, 773-203-xxxx, 773-204-xxxx, 773-205-xxxx, 773-206-xxxx, 773-207-xxxx, 773-208-xxxx, 773-209-xxxx, 773-210-xxxx, 773-212-xxxx, 773-213-xxxx, 773-214-xxxx, 773-215-xxxx, 773-216-xxxx, 773-218-xxxx, 773-219-xxxx, 773-220-xxxx, 773-221-xxxx, 773-222-xxxx, 773-223-xxxx, 773-224-xxxx, 773-225-xxxx, 773-226-xxxx, 773-227-xxxx, 773-228-xxxx, 773-229-xxxx, 773-230-xxxx, 773-231-xxxx, 773-232-xxxx, 773-233-xxxx, 773-234-xxxx, 773-235-xxxx, 773-236-xxxx, 773-237-xxxx, 773-238-xxxx, 773-239-xxxx, 773-240-xxxx, 773-241-xxxx, 773-242-xxxx, 773-243-xxxx, 773-244-xxxx, 773-245-xxxx, 773-246-xxxx, 773-247-xxxx, 773-248-xxxx, 773-249-xxxx, 773-250-xxxx, 773-251-xxxx, 773-252-xxxx, 773-253-xxxx, 773-254-xxxx, 773-255-xxxx, 773-256-xxxx, 773-257-xxxx, 773-258-xxxx, 773-259-xxxx, 773-260-xxxx, 773-261-xxxx, 773-262-xxxx, 773-263-xxxx, 773-264-xxxx, 773-265-xxxx, 773-266-xxxx, 773-267-xxxx, 773-268-xxxx, 773-269-xxxx, 773-270-xxxx, 773-271-xxxx, 773-272-xxxx, 773-273-xxxx, 773-274-xxxx, 773-275-xxxx, 773-276-xxxx, 773-277-xxxx, 773-278-xxxx, 773-279-xxxx, 773-280-xxxx, 773-281-xxxx, 773-282-xxxx, 773-283-xxxx, 773-284-xxxx, 773-285-xxxx, 773-286-xxxx, 773-287-xxxx, 773-288-xxxx, 773-289-xxxx, 773-290-xxxx, 773-291-xxxx, 773-292-xxxx, 773-293-xxxx, 773-294-xxxx, 773-295-xxxx, 773-296-xxxx, 773-297-xxxx, 773-298-xxxx, 773-299-xxxx, 773-301-xxxx, 773-302-xxxx, 773-303-xxxx, 773-304-xxxx, 773-305-xxxx, 773-306-xxxx, 773-307-xxxx, 773-308-xxxx, 773-309-xxxx, 773-310-xxxx, 773-312-xxxx, 773-313-xxxx, 773-314-xxxx, 773-315-xxxx, 773-316-xxxx, 773-317-xxxx, 773-318-xxxx, 773-319-xxxx, 773-320-xxxx, 773-321-xxxx, 773-322-xxxx, 773-323-xxxx, 773-324-xxxx, 773-325-xxxx, 773-326-xxxx, 773-327-xxxx, 773-328-xxxx, 773-329-xxxx, 773-330-xxxx, 773-331-xxxx, 773-332-xxxx, 773-333-xxxx, 773-334-xxxx, 773-335-xxxx, 773-336-xxxx, 773-337-xxxx, 773-338-xxxx, 773-339-xxxx, 773-340-xxxx, 773-341-xxxx, 773-342-xxxx, 773-343-xxxx, 773-344-xxxx, 773-345-xxxx, 773-346-xxxx, 773-347-xxxx, 773-348-xxxx, 773-349-xxxx, 773-350-xxxx, 773-351-xxxx, 773-352-xxxx, 773-353-xxxx, 773-354-xxxx, 773-355-xxxx, 773-356-xxxx, 773-357-xxxx, 773-358-xxxx, 773-359-xxxx, 773-360-xxxx, 773-361-xxxx, 773-362-xxxx, 773-363-xxxx, 773-364-xxxx, 773-365-xxxx, 773-366-xxxx, 773-367-xxxx, 773-368-xxxx, 773-369-xxxx, 773-370-xxxx, 773-371-xxxx, 773-372-xxxx, 773-373-xxxx, 773-374-xxxx, 773-375-xxxx, 773-376-xxxx, 773-377-xxxx, 773-378-xxxx, 773-379-xxxx, 773-380-xxxx, 773-381-xxxx, 773-382-xxxx, 773-383-xxxx, 773-384-xxxx, 773-385-xxxx, 773-386-xxxx, 773-387-xxxx, 773-388-xxxx, 773-389-xxxx, 773-390-xxxx, 773-391-xxxx, 773-392-xxxx, 773-393-xxxx, 773-394-xxxx, 773-395-xxxx, 773-396-xxxx, 773-397-xxxx, 773-398-xxxx, 773-399-xxxx, 773-400-xxxx, 773-401-xxxx, 773-402-xxxx, 773-403-xxxx, 773-404-xxxx, 773-405-xxxx, 773-406-xxxx, 773-407-xxxx, 773-408-xxxx, 773-409-xxxx, 773-410-xxxx, 773-412-xxxx, 773-413-xxxx, 773-414-xxxx, 773-415-xxxx, 773-416-xxxx, 773-417-xxxx, 773-418-xxxx, 773-419-xxxx, 773-420-xxxx, 773-421-xxxx, 773-422-xxxx, 773-423-xxxx, 773-424-xxxx, 773-425-xxxx, 773-426-xxxx, 773-427-xxxx, 773-428-xxxx, 773-429-xxxx, 773-430-xxxx, 773-431-xxxx, 773-432-xxxx, 773-433-xxxx, 773-434-xxxx, 773-435-xxxx, 773-436-xxxx, 773-437-xxxx, 773-438-xxxx, 773-439-xxxx, 773-440-xxxx, 773-441-xxxx, 773-442-xxxx, 773-443-xxxx, 773-444-xxxx, 773-445-xxxx, 773-446-xxxx, 773-447-xxxx, 773-448-xxxx, 773-449-xxxx, 773-450-xxxx, 773-451-xxxx, 773-452-xxxx, 773-453-xxxx, 773-454-xxxx, 773-455-xxxx, 773-456-xxxx, 773-457-xxxx, 773-458-xxxx, 773-459-xxxx, 773-460-xxxx, 773-461-xxxx, 773-462-xxxx, 773-463-xxxx, 773-464-xxxx, 773-465-xxxx, 773-466-xxxx, 773-467-xxxx, 773-468-xxxx, 773-469-xxxx, 773-470-xxxx, 773-471-xxxx, 773-472-xxxx, 773-473-xxxx, 773-474-xxxx, 773-475-xxxx, 773-476-xxxx, 773-477-xxxx, 773-478-xxxx, 773-479-xxxx, 773-480-xxxx, 773-481-xxxx, 773-482-xxxx, 773-483-xxxx, 773-484-xxxx, 773-485-xxxx, 773-486-xxxx, 773-487-xxxx, 773-488-xxxx, 773-489-xxxx, 773-490-xxxx, 773-491-xxxx, 773-492-xxxx, 773-493-xxxx, 773-494-xxxx, 773-495-xxxx, 773-496-xxxx, 773-497-xxxx, 773-498-xxxx, 773-499-xxxx, 773-501-xxxx, 773-502-xxxx, 773-503-xxxx, 773-504-xxxx, 773-505-xxxx, 773-506-xxxx, 773-507-xxxx, 773-508-xxxx, 773-509-xxxx, 773-510-xxxx, 773-512-xxxx, 773-513-xxxx, 773-514-xxxx, 773-515-xxxx, 773-516-xxxx, 773-517-xxxx, 773-518-xxxx, 773-519-xxxx, 773-520-xxxx, 773-521-xxxx, 773-522-xxxx, 773-523-xxxx, 773-524-xxxx, 773-525-xxxx, 773-526-xxxx, 773-527-xxxx, 773-528-xxxx, 773-529-xxxx, 773-530-xxxx, 773-531-xxxx, 773-532-xxxx, 773-533-xxxx, 773-534-xxxx, 773-535-xxxx, 773-536-xxxx, 773-537-xxxx, 773-538-xxxx, 773-539-xxxx, 773-540-xxxx, 773-541-xxxx, 773-542-xxxx, 773-543-xxxx, 773-544-xxxx, 773-545-xxxx, 773-546-xxxx, 773-547-xxxx, 773-548-xxxx, 773-549-xxxx, 773-550-xxxx, 773-551-xxxx, 773-552-xxxx, 773-553-xxxx, 773-554-xxxx, 773-555-xxxx, 773-556-xxxx, 773-557-xxxx, 773-558-xxxx, 773-559-xxxx, 773-560-xxxx, 773-561-xxxx, 773-562-xxxx, 773-563-xxxx, 773-564-xxxx, 773-565-xxxx, 773-566-xxxx, 773-567-xxxx, 773-568-xxxx, 773-569-xxxx, 773-570-xxxx, 773-571-xxxx, 773-572-xxxx, 773-573-xxxx, 773-574-xxxx, 773-575-xxxx, 773-576-xxxx, 773-577-xxxx, 773-578-xxxx, 773-579-xxxx, 773-580-xxxx, 773-581-xxxx, 773-582-xxxx, 773-583-xxxx, 773-584-xxxx, 773-585-xxxx, 773-586-xxxx, 773-587-xxxx, 773-588-xxxx, 773-589-xxxx, 773-590-xxxx, 773-591-xxxx, 773-592-xxxx, 773-593-xxxx, 773-594-xxxx, 773-595-xxxx, 773-596-xxxx, 773-597-xxxx, 773-598-xxxx, 773-599-xxxx, 773-600-xxxx, 773-601-xxxx, 773-602-xxxx, 773-603-xxxx, 773-604-xxxx, 773-605-xxxx, 773-606-xxxx, 773-607-xxxx, 773-608-xxxx, 773-610-xxxx, 773-612-xxxx, 773-613-xxxx, 773-614-xxxx, 773-615-xxxx, 773-616-xxxx, 773-617-xxxx, 773-618-xxxx, 773-619-xxxx, 773-620-xxxx, 773-621-xxxx, 773-622-xxxx, 773-623-xxxx, 773-624-xxxx, 773-625-xxxx, 773-626-xxxx, 773-627-xxxx, 773-628-xxxx, 773-629-xxxx, 773-630-xxxx, 773-631-xxxx, 773-632-xxxx, 773-633-xxxx, 773-634-xxxx, 773-635-xxxx, 773-636-xxxx, 773-637-xxxx, 773-638-xxxx, 773-639-xxxx, 773-640-xxxx, 773-641-xxxx, 773-642-xxxx, 773-643-xxxx, 773-644-xxxx, 773-645-xxxx, 773-646-xxxx, 773-647-xxxx, 773-648-xxxx, 773-649-xxxx, 773-650-xxxx, 773-651-xxxx, 773-652-xxxx, 773-653-xxxx, 773-654-xxxx, 773-655-xxxx, 773-656-xxxx, 773-657-xxxx, 773-658-xxxx, 773-659-xxxx, 773-660-xxxx, 773-661-xxxx, 773-662-xxxx, 773-663-xxxx, 773-664-xxxx, 773-665-xxxx, 773-667-xxxx, 773-668-xxxx, 773-669-xxxx, 773-670-xxxx, 773-671-xxxx, 773-672-xxxx, 773-673-xxxx, 773-674-xxxx, 773-675-xxxx, 773-676-xxxx, 773-677-xxxx, 773-678-xxxx, 773-679-xxxx, 773-680-xxxx, 773-681-xxxx, 773-682-xxxx, 773-683-xxxx, 773-684-xxxx, 773-685-xxxx, 773-686-xxxx, 773-687-xxxx, 773-688-xxxx, 773-689-xxxx, 773-690-xxxx, 773-691-xxxx, 773-692-xxxx, 773-693-xxxx, 773-694-xxxx, 773-695-xxxx, 773-696-xxxx, 773-697-xxxx, 773-698-xxxx, 773-699-xxxx, 773-701-xxxx, 773-702-xxxx, 773-704-xxxx, 773-705-xxxx, 773-706-xxxx, 773-709-xxxx, 773-710-xxxx, 773-712-xxxx, 773-713-xxxx, 773-714-xxxx, 773-715-xxxx, 773-716-xxxx, 773-717-xxxx, 773-718-xxxx, 773-719-xxxx, 773-720-xxxx, 773-721-xxxx, 773-722-xxxx, 773-723-xxxx, 773-724-xxxx, 773-725-xxxx, 773-726-xxxx, 773-727-xxxx, 773-728-xxxx, 773-729-xxxx, 773-730-xxxx, 773-731-xxxx, 773-732-xxxx, 773-733-xxxx, 773-734-xxxx, 773-735-xxxx, 773-736-xxxx, 773-737-xxxx, 773-738-xxxx, 773-739-xxxx, 773-740-xxxx, 773-741-xxxx, 773-742-xxxx, 773-743-xxxx, 773-744-xxxx, 773-745-xxxx, 773-746-xxxx, 773-747-xxxx, 773-748-xxxx, 773-749-xxxx, 773-750-xxxx, 773-751-xxxx, 773-752-xxxx, 773-753-xxxx, 773-754-xxxx, 773-755-xxxx, 773-756-xxxx, 773-757-xxxx, 773-758-xxxx, 773-759-xxxx, 773-760-xxxx, 773-761-xxxx, 773-762-xxxx, 773-763-xxxx, 773-764-xxxx, 773-765-xxxx, 773-766-xxxx, 773-767-xxxx, 773-768-xxxx, 773-769-xxxx, 773-770-xxxx, 773-771-xxxx, 773-772-xxxx, 773-774-xxxx, 773-775-xxxx, 773-776-xxxx, 773-777-xxxx, 773-778-xxxx, 773-779-xxxx, 773-780-xxxx, 773-781-xxxx, 773-782-xxxx, 773-783-xxxx, 773-784-xxxx, 773-785-xxxx, 773-786-xxxx, 773-787-xxxx, 773-788-xxxx, 773-789-xxxx, 773-790-xxxx, 773-791-xxxx, 773-792-xxxx, 773-793-xxxx, 773-794-xxxx, 773-795-xxxx, 773-796-xxxx, 773-797-xxxx, 773-798-xxxx, 773-799-xxxx, 773-800-xxxx, 773-801-xxxx, 773-802-xxxx, 773-803-xxxx, 773-804-xxxx, 773-805-xxxx, 773-806-xxxx, 773-807-xxxx, 773-808-xxxx, 773-809-xxxx, 773-810-xxxx, 773-812-xxxx, 773-813-xxxx, 773-814-xxxx, 773-815-xxxx, 773-816-xxxx, 773-817-xxxx, 773-818-xxxx, 773-819-xxxx, 773-820-xxxx, 773-821-xxxx, 773-822-xxxx, 773-823-xxxx, 773-824-xxxx, 773-825-xxxx, 773-826-xxxx, 773-827-xxxx, 773-828-xxxx, 773-829-xxxx, 773-830-xxxx, 773-831-xxxx, 773-832-xxxx, 773-833-xxxx, 773-834-xxxx, 773-835-xxxx, 773-836-xxxx, 773-837-xxxx, 773-838-xxxx, 773-839-xxxx, 773-840-xxxx, 773-841-xxxx, 773-842-xxxx, 773-843-xxxx, 773-844-xxxx, 773-845-xxxx, 773-846-xxxx, 773-847-xxxx, 773-848-xxxx, 773-849-xxxx, 773-850-xxxx, 773-851-xxxx, 773-852-xxxx, 773-853-xxxx, 773-854-xxxx, 773-855-xxxx, 773-856-xxxx, 773-857-xxxx, 773-858-xxxx, 773-859-xxxx, 773-860-xxxx, 773-861-xxxx, 773-862-xxxx, 773-863-xxxx, 773-864-xxxx, 773-865-xxxx, 773-866-xxxx, 773-867-xxxx, 773-868-xxxx, 773-869-xxxx, 773-870-xxxx, 773-871-xxxx, 773-873-xxxx, 773-874-xxxx, 773-875-xxxx, 773-876-xxxx, 773-877-xxxx, 773-878-xxxx, 773-879-xxxx, 773-880-xxxx, 773-881-xxxx, 773-882-xxxx, 773-883-xxxx, 773-884-xxxx, 773-885-xxxx, 773-886-xxxx, 773-887-xxxx, 773-889-xxxx, 773-890-xxxx, 773-891-xxxx, 773-892-xxxx, 773-893-xxxx, 773-894-xxxx, 773-895-xxxx, 773-896-xxxx, 773-898-xxxx, 773-899-xxxx, 773-902-xxxx, 773-903-xxxx, 773-904-xxxx, 773-905-xxxx, 773-906-xxxx, 773-907-xxxx, 773-908-xxxx, 773-909-xxxx, 773-910-xxxx, 773-912-xxxx, 773-913-xxxx, 773-914-xxxx, 773-915-xxxx, 773-917-xxxx, 773-918-xxxx, 773-919-xxxx, 773-920-xxxx, 773-921-xxxx, 773-922-xxxx, 773-923-xxxx, 773-924-xxxx, 773-925-xxxx, 773-926-xxxx, 773-927-xxxx, 773-928-xxxx, 773-929-xxxx, 773-930-xxxx, 773-931-xxxx, 773-932-xxxx, 773-933-xxxx, 773-934-xxxx, 773-935-xxxx, 773-936-xxxx, 773-937-xxxx, 773-938-xxxx, 773-939-xxxx, 773-940-xxxx, 773-941-xxxx, 773-942-xxxx, 773-944-xxxx, 773-946-xxxx, 773-947-xxxx, 773-948-xxxx, 773-949-xxxx, 773-951-xxxx, 773-952-xxxx, 773-953-xxxx, 773-954-xxxx, 773-955-xxxx, 773-956-xxxx, 773-957-xxxx, 773-960-xxxx, 773-961-xxxx, 773-962-xxxx, 773-963-xxxx, 773-964-xxxx, 773-965-xxxx, 773-966-xxxx, 773-967-xxxx, 773-968-xxxx, 773-969-xxxx, 773-971-xxxx, 773-972-xxxx, 773-973-xxxx, 773-974-xxxx, 773-975-xxxx, 773-977-xxxx, 773-978-xxxx, 773-979-xxxx, 773-980-xxxx, 773-981-xxxx, 773-982-xxxx, 773-983-xxxx, 773-984-xxxx, 773-985-xxxx, 773-986-xxxx, 773-987-xxxx, 773-988-xxxx, 773-989-xxxx, 773-990-xxxx, 773-991-xxxx, 773-992-xxxx, 773-993-xxxx, 773-994-xxxx, 773-995-xxxx, 773-996-xxxx, 773-997-xxxx, 773-999-xxxx
Number of telephone companies36 telephone companies servicing the 773 area code
List of telephone companiesUSA MOBILITY WIRELESS, INC., AMERITECH ILLINOIS, NEW CINGULAR WIRELESS PCS, LLC - IL, SPRINT SPECTRUM L.P., UNITED STATES CELLULAR CORP. - ILLINOIS, NEXTEL COMMUNICATIONS, INC., CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL, T-MOBILE USA, INC., DENALI SPECTRUM LICENSE, LLC, LEVEL 3 COMMUNICATIONS, LLC - IL, BROADWING COMMUNICATIONS, LLC - IL, XO ILLINOIS, INC., INDIANA PAGING NTWK, MCIMETRO ACCESS TRANSMISSION SERVICES LLC, ACCESS ONE, INC. - IL, TELEPORT COMMUNICATIONS GROUP - CHICAGO, AT&T LOCAL, PAETEC COMMUNICATIONS, INC. - IL, BANDWIDTH.COM CLEC, LLC - IL, ALLEGIANCE TELECOM, INC. - IL, AT&T - LOCAL - IL, GLOBALCOM, INC.-IL, AMERICAN MESSAGING (AM), INC., MCI WORLDCOM COMMUNICATIONS, INC. - IL, OVATION COMMUNICATIONS OF ILLINOIS, INC., US XCHANGE OF ILLINOIS LLC DBA CHOICE ONE COMM IL, COMCAST PHONE OF ILLINOIS, LLC - IL, CIMCO COMMUNICATIONS, INC. - IL, RCN TELECOM SERVICES OF ILLINOIS, INC. - IL, NEUTRAL TANDEM-ILLINOIS, LLC - IL, GLOBAL CROSSING LOCAL SERVICES, INC.-IL, CBEYOND COMMUNICATIONS, LLC-IL, AIR FREE PAGING, SIGECOM, LLC - IL, CELLULAR PAGING USA, INC., MULTI COMPUTER SYSTEMS, INC.

773 Area Code Map

 
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