Area code
Area code 815 — Rockford, IL
Illinois · in service since 1947
Area code 815 covers parts of Illinois; the place with the most of its prefixes is Rockford. It is an overlay: 779 serves the same area, so neighbors can have different area codes.
Overlay, same area: 779
Local time in Rockford
Spam reports from Sep 23 – Oct 22, 2026
High #95 of 461 codes
729 FTC complaints
Consumer reports, not verified by the FTC.
See the reports- Time zoneCentral Time
- Local calls1 + 10 digits
- Prefixes800 assigned
- Runs out~1Q 2044
- Unwanted call?Block & report
Spam call reports about 815 numbers
Complaints by week
Sep 11 – Oct 22, 2026Show as table
| Week starting | Complaints |
|---|---|
| Sep 7 (3 days) | 50 |
| Sep 14 | 192 |
| Sep 21 | 162 |
| Sep 28 | 202 |
| Oct 5 | 140 |
| Oct 12 | 174 |
| Oct 19 (4 days) | 120 |
Compared with all codes
- Robocalls
- 68%all codes 75%
- Callers with the same code
- 51%all codes 35%
- Rank by complaints
- #95of 461 · top quarter
- FCC complaints, Oct 2025 – Sep 2026
- 10912 about text messages
What the calls were about
Sep 11 – Oct 22, 2026
| Subject | Complaints | |
|---|---|---|
| Reducing your debt (credit cards, mortgage, student loans) | 212 20% | |
| Dropped call or no message | 125 12% | |
| Calls pretending to be government, businesses, or family and friends | 61 6% | |
| Medical & prescriptions | 39 4% | |
| Computer & technical support | 22 2% | |
| Warranties & protection plans | 19 2% |
Where the people who complained live
Sep 11 – Oct 22, 2026
| State | Complaints | |
|---|---|---|
| Illinois | 696 67% | |
| California | 47 5% | |
| Florida | 40 4% | |
| Georgia | 24 2% | |
| Michigan | 18 2% |
October 2026 (partial) report · most reported
Consumer reports, not verified by the FTC · source
Source: FTC Do Not Call complaints created Sep 11 – Oct 22, 2026. They are reported by consumers and are not verified by the FTC; caller ID can be spoofed (how we count).
Source: FCC Consumer Complaints data, unwanted calls filed Oct 1, 2025 – Sep 30, 2026, by caller ID; not verified by the FCC.
Area code 815 location and prefixes
| Exchange (NANPA) | Place | County | Prefixes |
|---|---|---|---|
| ROCKFORD | Rockford | spans 2 counties | 89 |
| JOLIET | Joliet | spans 2 counties | 62 |
| KANKAKEE | Kankakee | Kankakee County | 33 |
| WOODSTOCK | Woodstock | McHenry County | 28 |
| DE KALB | DeKalb | DeKalb County | 24 |
| FREEPORT | Freeport | Stephenson County | 18 |
| LOCKPORT | Lockport | Will County | 18 |
| MCHENRY | McHenry | McHenry County | 18 |
| CRYSTAL LK | Crystal Lake | McHenry County | 16 |
| PLAINFIELD | Plainfield | spans 2 counties | 15 |
Plus 190 smaller exchange areas.
Source: NANPA CO codes of Oct 23, 2026; places: U.S. Census Bureau, matched by DialWhere (how).
NANPA record
- Location
- Illinois
- Assigned by NANPA
- 1947
- Local dialing
- 1 + 10 digits (NANPA: 1+10D)
- NANPA planning letters
- PL-354
Source: NANPA, NPA database of Oct 24, 2026.
Is 815 running out of numbers?
Previous forecast (October 2025): 2042, moved later by 2 years.
Forecast exhaust year by edition
Source: NANPA NRUF forecast, April 2026 edition.
Who holds 815 prefixes
The five largest of 55 original holders
As listed by NANPA, not today’s carrier.
| Holder (as listed) | Prefixes | |
|---|---|---|
| Illinois Bell Tel Co. | 157 20% | |
| Frontier North, Inc. | 133 17% | |
| Level 3 Communications, LLC | 76 10% | |
| Verizon Wireless | 50 6% | |
| Aero North Communications, Inc. | 43 5% |
Source: NANPA CO codes of Oct 23, 2026.
Questions about area code 815
What area code is 815?
An Illinois area code, in service since 1947.
Where is 815 area code, and what time zone is it in?
Rockford, IL; Central Time.
Why am I getting spam calls from 815?
729 FTC complaints from Sep 23 – Oct 22, 2026, most often about debt reduction (not verified by the FTC; caller ID can be spoofed).
Will 815 get a new area code?
NANPA forecasts exhaust in 1Q 2044; no relief planning listed.