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zipcodes.pro — AREA-CODE/630

630 area code

Area code 630 is in Illinois. It covers Aurora, Naperville, Elgin and 66 other places: 98 ZIP codes in DuPage, Kane, Cook and 2 other counties. Local time there is , Central Time. In service since 1996; 331 (2007) overlays it, so a number from there can have either code.

Time zone
Central
Largest city
Aurora
Overlays
331
In service since
1996
Rate centres
33
Prefixes assigned
782 (7,820,000 numbers)

Who calls from a 630 number

NANPA records the carrier each block of 630 numbers is assigned to. Of the 7.3 million 630 numbers assigned, 35% are with mobile carriers (T-Mobile, AT&T Mobility and Verizon Wireless); 33% with local phone companies (AT&T); 29% with cable, internet-calling, business and other carriers (Level 3 and Onvoy); 3% with paging companies.

That is who the numbers were assigned to: people keep their number when they change carrier, so any one number may have moved since.

Carriers holding the most 630 numbers
CarrierKindShare
AT&TLandline33%
T-MobileMobile15%
AT&T MobilityMobile10%
Verizon WirelessMobile9%
Level 3Cable, VoIP, other5%
OnvoyCable, VoIP, other5%

An area code says where a number was issued, not where the caller is: people keep their numbers when they move, and caller ID can be set to show any number, which the FCC calls spoofing. If a call you did not expect asks for money or personal details, the FCC advises hanging up and calling the company back on a number you look up yourself. Unwanted calls can be reported to the FTC at ReportFraud.ftc.gov.

Places in area code 630

The 32 places with a telephone rate centre of their own using 630, largest first. Each links to its ZIP codes.

Places in area code 630
PlaceZIP codesPopulation
Aurora, IL 10 179,898
Naperville, IL 6 150,692
Elgin, IL 5 114,934
Wheaton, IL 2 53,557
Downers Grove, IL 2 50,054
Elmhurst, IL 1 45,671
Lombard, IL 1 43,619
Bartlett, IL 1 40,501
Wheeling, IL 1 38,433
Oswego, IL 1 36,375
Northbrook, IL 2 34,585
St. Charles, IL 2 32,854
Glen Ellyn, IL 2 28,390
Batavia, IL 1 27,151
West Chicago, IL 2 25,395
Yorkville, IL 1 23,617
Maywood, IL 1 23,201
Roselle, IL 1 22,752
Geneva, IL 1 21,258
Bensenville, IL 2 18,603
Lemont, IL 1 17,820
Hinsdale, IL 2 17,175
La Grange, IL 1 15,998
Warrenville, IL 1 14,718
Western Springs, IL 1 13,446
Plano, IL 1 12,203
Summit, IL — 10,846
Itasca, IL 1 9,355
Sugar Grove, IL 1 9,240
Elburn, IL 1 6,354
Big Rock, IL 1 1,548
Kaneville, IL 1 523

Nearby places using 630

These places have no rate centre of their own in NANPA's records; the nearest one uses 630. Near an area-code boundary that can be wrong for part of a town.

ZIP codes in area code 630

98 ZIP codes in 59 towns, by the town each is mailed to, largest first. Each links to its own page.

Where 630 numbers are issued

NANPA's rate centres with the most 630 prefixes (each prefix is 10,000 numbers), under NANPA's own abbreviated names.

Rate centres using area code 630
Rate centrePlacePrefixes
ROSELLE Roselle 77
HINSDALE Hinsdale 75
LA GRANGE La Grange 74
NAPERVILLE Naperville 74
DOWNERSGRV Downers Grove 56
AURORA Aurora 55

Counties

The counties of its ZIP codes, most residents first, with how many of its ZIP codes each has.

Which code covers where you are now? What area code am I in? answers from your location.

Questions about area code 630

Where is area code 630?

Area code 630 is in Illinois. It covers Aurora, Naperville, Elgin and 66 other places: 98 ZIP codes in DuPage, Kane, Cook and 2 other counties.

What ZIP codes are in area code 630?

98 ZIP codes, by the town each is mailed to: Aurora (10, 60502 to 60598), Naperville (6, 60540 to 60567), Elgin (5, 60120 to 60124), Schaumburg (7, 60159 to 60196) and 55 more towns. The full list is on this page.

What time zone is area code 630 in?

Central time.

Is a 630 number a mobile or a landline?

It can be either. 35% of 630 numbers are assigned to mobile carriers and 33% to local phone companies (NANPA, 2026-10-10); the rest are with cable, internet-calling, business and paging carriers. A number keeps its area code when it moves to another carrier.

What area codes overlay 630?

331. They cover the same area as 630, so a new number there can be given any of them.

Does a 630 number mean the caller is in Illinois?

Not necessarily. An area code says where the number was first issued. People keep their numbers when they move or switch carriers, and calling software can show any number, so a 630 call can come from anywhere.

Other area codes in Illinois

All 17 Illinois area codes, by area, with the cities each covers

Source: NANPA NPA database, central office code and thousands-block assignments, 2026-10-10. Places are matched to NANPA's rate centres by name; see sources.

Cite this page

zipcodes.pro. “Area code 630.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/area-code/630

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