464 Area Code — Joliet, IL
Area code 464 serves Joliet and 2 other cities in Illinois. Local time follows America/Chicago. It overlays with 708, so 10-digit dialling is required.
- State
- Illinois
- Primary city
- Joliet
- Timezone
- America/Chicago
- In service since
- 2024
- Type
- Overlay
- Overlay codes
- 708
Overlay of 708
Cities Served by 464
The 464 area code covers 3 cities and communities in Illinois.
- Joliet
- Naperville
- Aurora
About Area Code 464
Area code 464 is a North American Numbering Plan (NANP) area code that has been in service since 2024. It is administered by NANPA on behalf of the FCC and serves the Illinois region anchored on Joliet.
464 is an overlay code, which means it shares its geographic boundaries with one or more existing area codes (708). Overlays are created when a region exhausts the supply of phone numbers in its original area code. Within an overlay region, residents must dial all 10 digits even for local calls, because the same 7-digit number can exist under multiple area codes.
Mobile numbers in 464 are portable: a person who moved away from Joliet may still carry a 464 mobile number on their device. If you receive an unexpected call from a 464 number, run it through the reverse lookup tool above for the most accurate, free identification.
If you live or do business in Illinois, you may also interact with neighbouring or overlay codes (708). See the related codes section below to explore the rest of Illinois.
Other Illinois Area Codes
Continue exploring the Illinois numbering plan.
464 Area Code FAQ
Where is area code 464?
Area code 464 is located in Illinois, primarily serving Joliet and surrounding cities including Naperville, Aurora. The region operates on CT (America/Chicago) time.
What state is 464 area code?
464 is a Illinois area code. It was put into service in 2024 as an overlay and shares its geographic footprint with overlay code 708.
Is 464 a scam area code?
464 is a legitimate North American area code allocated by NANPA to Illinois. Like any geographic area code, scammers sometimes spoof 464 numbers — judge each call by content (urgent demands, unfamiliar transfers) rather than the area code alone. Run the specific number through our reverse lookup if you're unsure.
What time zone does 464 use?
Area code 464 operates on CT (America/Chicago). Numbers in this area code follow standard Illinois time-zone rules including any daylight-saving transitions for that region.
Can I look up a specific 464 phone number?
Yes. Use the reverse lookup widget above to enter a full 464 number. NumLocation returns the line type (mobile, landline, VoIP), carrier, rate-center city, and any public listings tied to the number — free.
What's the difference between 464 and 708?
464 and 708 cover the same Illinois geographic area as overlay codes. Calls between them are local, but you must dial all 10 digits. New phone numbers in this region are assigned from either pool depending on what's available with the carrier at signup.