ILLINOIS · AREA CODE GUIDE
630 area code location: Aurora and Naperville, Illinois
- Local date and time
- Central Time
Map data: HSIP (2010) · NANPA · US Census Bureau, checked 26 September 2026. Boundaries are approximate.
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Download the 630 area code map
A printable area code 630 location map, with time zone and state. Use the PNG image in a document or slide; the SVG stays sharp at any size.
630 area code at a glance
- State
- Illinois
- Primary cities
- Aurora, Naperville, and Wheaton
- Established
- Population
- Largest community: Aurora, 181,505 (2025)Not an area-code population.
- Prefixes in service
- 781 as of 13 October 2026
An area code does not show where a caller is now.
History
Country and calling code: United States (+1).
Parent code: 708.
New code planned: No, as of 22 September 2026.
- : 331 added as an overlay on 630
Time zone
- Central Time
- Standard time UTC−06:00
- Daylight saving time UTC−05:00
Counties and cities covered
630 numbers are issued across 25 communities. These are telephone exchange areas, which follow the phone network rather than city limits, so a place can sit just outside the boundary of the town it is named for.
Counties of the communities we could place (the code may reach further): DuPage County, Kane County, Cook County, Kendall County, and Will County.
- Aurora
- Naperville
- Wheaton
- Downers Grove
- Elmhurst
- Lombard
- Bartlett
- Oswego
- Saint Charles
- Glen Ellyn
- Yorkville
- Batavia
- West Chicago
- Roselle
- Geneva
- Bensenville
- Lemont
- Hinsdale
- Warrenville
- Plano
- Itasca
- Sugar Grove
- Elburn
- Big Rock
- Kaneville
Notable places in 630
| Place | Where | What it is |
|---|---|---|
| Wheaton College | 1.7 km from Wheaton | University, 3,254 12-month enrollment (2023–24) |
| DeVry University | 4.4 km from Elmhurst | University |
| Aurora University | 4.9 km from Aurora | University, 7,071 12-month enrollment (2023–24) |
| DuPage Airport | 2.6 km from West Chicago | Airport |
| Aurora Municipal Airport | 2.5 km from Sugar Grove | Airport |
| Morton Arboretum | 4.7 km from Downers Grove | Botanical garden |
| Bolingbrook's Clow International Airport | 6.5 km from Naperville | Airport |
| Lilacia Park | 1.3 km from Lombard | Botanical garden |
| Cosley Zoo | 2.6 km from Wheaton | Zoo |
| Fabyan Villa | 1.9 km from Geneva | Museum |
Area code 331 has its own page.
Area code 630
630 started service on .It came from 708.
No new code is planned for the region as of .
Questions about 630
Where is the 630 area code?
630 is in Illinois. Its numbers are issued in Aurora, Naperville, Wheaton, and 22 other communities.
What time zone is area code 630 in?
630 is in Central Time. Daylight saving time is observed.
Does 630 have an overlay?
Yes. 331 was added as an overlay on 630 on 7 October 2007.
What cities are in the 630 area code?
Aurora, Naperville, Wheaton, Downers Grove, and Elmhurst, and 20 other communities.
What state is area code 630 in?
Area code 630 is in Illinois.
What counties are covered by area code 630?
Area code 630 covers communities in DuPage County, Kane County, Cook County, Kendall County, and Will County.
Is 630 a toll-free area code?
No. 630 is a geographic area code. The toll-free codes are 800, 833, 844, 855, 866, 877, and 888.
Sources: NANPA area code listing, NANPA places by area code, NANPA central office code assignments, U.S. Census Bureau population estimates, OMB metropolitan area delineations. Checked .
Business phone numbers in area code 630, answered by an AI agent
A local number for Aurora, Naperville, and Wheaton, Illinois, with an AI receptionist that takes caller details, answers the questions you give it, and books appointments. Numbers depend on what carriers have left.