815 area code: location, overlays and numbers
In Chicago, Illinois, 815 is a US telephone area code that has served the area since 1947 and shares an overlay with 779.
- Location
- Chicago, Illinois
- Service began in
- 1947
- Time zone used
- Central time zone
- Overlay
- 779
- Calls within the area
- Full 1 + 10-digit dialling
- List of rate centres
- 198
- Expected exhaustion
- 2044
- Code for the country
- +1 (United States)
Source: NANPA public reports. The area code report, along with the rate-centre report, comes from the file of 11/01/2026, and the exhaust year is taken from the 2026-1 (April 2026) NANPA projections. This site is not an official NANPA website.
Get an 815 number
An 815 number is available through two routes. With your plan, a provider assigns a new number, chosen at sign-up from the pool of numbers it holds in the code. Numbers that a seller already holds are often offered with a pattern and a one-time price. After choosing one, you move the number to a provider.
Providers ranked by first-year cost
| Provider | Cheapest plan | First year | Link |
|---|---|---|---|
 Free app | Basic (Just for me), free | $0 | Open Google Voice |
 Free app | Free plan, free | $0 | Open TextNow |
 Developer API | Pay-as-you-go local number, $1.15 a month | $13.80 | Open Twilio |
 Second-number app | Standard, $3.99 a month billed yearly | $47.99 | Open Burner |
 Toll-free specialist | Solo, $6.99 a month billed yearly | $84 | Open UniTel Voice |
 Second-number app | Deluxe (local number), $6.99 a month billed yearly | $102.88 | Open GoDaddy Conversations (formerly Smartline) |
Sellers offering listed local numbers
| Seller | What it sells | Listed price | Monthly fee | Link |
|---|---|---|---|---|
 Marketplace | Local numbers | From $9 one-time | None stated | Search at Exclusive Digits |
 Marketplace | Local and toll-free | From $9.95 one-time | $2.99 a month | Search at NumberBarn |
 Number broker | Local and toll-free | From $99 one-time | None stated | Search at RingBoost |
 Number broker | Local and toll-free | From $100 one-time | None stated | Search at PhoneNumberExpert |
| 212areacode.comNumber broker | Local numbers | From $150 one-time | None stated | Search at 212areacode.com |
Some sellers and providers may pay us a referral fee. The list follows first-year cost, and referral fees never change that order. How we earn
Places in the 815 area code
For 815, NANPA lists 198 rate centres. Numbers are assigned to these local calling areas:
The list includes Amboy, Apple River, Ashkum and Ashton. It also includes Beaverville, Belvidere, Braidwood and Bureau. Byron, Cabery and Campus are included too. Capron, Cedar Point and Cedarville follow. Chadwick, Chatsworth and Chebanse appear in the list. Chenoa, Cherry Valley and Cissna Park are included. Clifton, Coal City and Coleta are also listed. Compton, Cornell and Crescent City appear. Creston, Crystal Lake and Cullom are included. Dakota, Danforth and Davis appear too. Dekalb, Depue, Dixon and Donovan are listed. Dover, Durand, Dwight and East Dubuque are included. Earlville, Elizabeth, Elwood and Emington appear. Fairbury, Flanagan, Forrest and Forreston are listed. Frankfort, Franklin Grove, Freeport and Fulton are included. Galena, Garden Prairie, Gardner and Genoa appear. German Valley, Gilman, Grand Detour, Grand Ridge, plus 138 more are included.
Other related area codes
Numbers from 779 come from the same area and pool. Any of these codes can give you a new number here, so request the code you want.
Other codes in Illinois: 217, 312, 618, 309, 708, 847 and 630. Another group: 773, 224, 331, 872, 447 and 464. The last set: 861 and 730.
815 area code questions
Which area does 815 cover?
The 815 area code rings in Chicago, Illinois, around metro Chicago-Naperville-Elgin, IL-IN.
Which country code applies to an 815 number?
+1. The North American Numbering Plan covers 815, so calling from abroad means dialing +1 815 plus the 7-digit number.
What time is it in the 815 area code?
Central time applies to 815.
Who calls with an 815 number?
This code is used by homes, mobiles, local businesses and callers who pretend their number is local. The 815 number displayed on your screen shows where it was assigned, but it does not identify the caller.