What time zone is area code 773 in?

Area code 773 uses Central Time.

What area codes overlay 773?

872 serves the same area as 773. New numbers in the area can get any of these codes, which is why local calls need all 10 digits.

Is a call from area code 773 a scam?

The area code alone doesn’t tell you. Most calls from 773 are ordinary local calls, but scammers can fake (“spoof”) any number. If you don’t recognize a 773 number, let it go to voicemail.

When did area code 773 start?

773 went into service in 1996. It was created from area code 312.

Can a 773 number be outside Illinois?

Yes. People keep their numbers when they move and when they switch to mobile or internet phone services, so a 773 caller can be anywhere.

Area code 773

Where is area code 773?

Harwood Heights, Chicgozn01 and Chicgozn02, Illinois

Local time: … (Central Time)

State	Illinois
Country	United States
Main cities	Harwood Heights, Chicgozn01 and Chicgozn02
Time zone	Central Time
Overlay area codes	872
In service since	1996 (created from 312)
Assigned prefixes	786
Dialing format	(773) XXX-XXXX · +1 773 XXX XXXX from abroad

Look up a 773 number

Cities and towns in area code 773

Listed by how many phone prefixes (the 3 digits after the area code) are assigned to each place in 773.

Harwood Heights, IL (170)
Chicgozn01, IL (124)
Chicgozn02, IL (79)
Chicgozn07, IL (78)
Chicgozn04, IL (75)
Chicgozn10, IL (72)
Chicgozn06, IL (56)
Chicgozn08, IL (45)
Chicgozn05, IL (41)
Chicgozn09, IL (26)
Chicgozn11, IL (20)

Phone companies in area code 773

The carriers that hold the most 773 prefixes. People can move their number to another carrier, so this shows who first issued a number, not who serves it today.

Prefixes	Carrier
257	Illinois Bell Tel Co (AT&T)
169	T-Mobile USA
84	New Cingular Wireless PCS (AT&T)
59	Verizon Wireless
46	Mcimetro Access Transmission Services
36	Level 3 Communications
33	Paetec Itel
23	Teleport Communications America

All 786 prefixes in area code 773

Pick the 3 digits after the area code to see that prefix’s city and carrier.

Area codes that overlay 773

Questions

Where is area code 773?: Area code 773 is in Illinois. It serves Harwood Heights, Chicgozn01, Chicgozn02, Chicgozn07 and Chicgozn04 and 6 other cities and towns.
What time zone is area code 773 in?: Area code 773 uses Central Time.
What area codes overlay 773?: 872 serves the same area as 773. New numbers in the area can get any of these codes, which is why local calls need all 10 digits.
Is a call from area code 773 a scam?: The area code alone doesn’t tell you. Most calls from 773 are ordinary local calls, but scammers can fake (“spoof”) any number. If you don’t recognize a 773 number, let it go to voicemail.
When did area code 773 start?: 773 went into service in 1996. It was created from area code 312.
Can a 773 number be outside Illinois?: Yes. People keep their numbers when they move and when they switch to mobile or internet phone services, so a 773 caller can be anywhere.

Other area codes in Illinois

Area code	Main cities
217	Springfield, Champaign and Decatur
224	Northbrook, Arlington Hts and Des Plaines
309	Peoria, Bloomington and Rock Island
312	Chicgozn01, Wheeling and Oak Brook
331	Aurora, Naperville and Downers Grove
447	Danville, Springfield and Champaign
464	Oak For So, Forest Park and La Grange
618	Collinsville, Carbondale and Belleville
630	Schaumburg, La Grange and Naperville
708	La Grange, Chicago Heights and Oak Forest
730	Centralia, Herrin and Belleville
779	Rockford, Joliet and Momence
815	Rockford, Joliet and Kankakee
847	Northbrook, Schaumburg and Arlington Hts
861	Peoria, Danvers and Moline