Area code
Area code 618 — Collinsville, IL
Illinois · in service since 1947
Area code 618 covers parts of Illinois; the place with the most of its prefixes is Collinsville. It is an overlay: 730 serves the same area, so neighbors can have different area codes.
Overlay, same area: 730
Local time in Collinsville
Spam reports from Sep 23 – Oct 22, 2026
High #108 of 461 codes
689 FTC complaints
Consumer reports, not verified by the FTC.
See the reports- Time zoneCentral Time
- Local calls10 digits
- Prefixes800 assigned
- Runs out~4Q 2040
- Unwanted call?Block & report
Spam call reports about 618 numbers
Complaints by week
Sep 11 – Oct 22, 2026Show as table
| Week starting | Complaints |
|---|---|
| Sep 7 (3 days) | 45 |
| Sep 14 | 195 |
| Sep 21 | 122 |
| Sep 28 | 148 |
| Oct 5 | 160 |
| Oct 12 | 150 |
| Oct 19 (4 days) | 146 |
Compared with all codes
- Robocalls
- 80%all codes 75%
- Callers with the same code
- 46%all codes 35%
- Rank by complaints
- #108of 461 · top quarter
- FCC complaints, Oct 2025 – Sep 2026
- 914 about text messages
What the calls were about
Sep 11 – Oct 22, 2026
| Subject | Complaints | |
|---|---|---|
| Reducing your debt (credit cards, mortgage, student loans) | 204 21% | |
| Dropped call or no message | 173 18% | |
| Calls pretending to be government, businesses, or family and friends | 112 12% | |
| Medical & prescriptions | 48 5% | |
| Home improvement & cleaning | 12 1% | |
| Warranties & protection plans | 12 1% |
Where the people who complained live
Sep 11 – Oct 22, 2026
| State | Complaints | |
|---|---|---|
| Illinois | 557 58% | |
| California | 71 7% | |
| Florida | 42 4% | |
| Georgia | 29 3% | |
| New Jersey | 23 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 618 location and prefixes
| Exchange (NANPA) | Place | County | Prefixes |
|---|---|---|---|
| COLLINSVL | Collinsville | spans 2 counties | 88 |
| CARBONDALE | Carbondale | spans 2 counties | 33 |
| BELLEVILLE | Belleville | St. Clair County | 31 |
| CENTRALIA | Centralia | spans 4 counties | 24 |
| GRANITE CY | Granite City | Madison County | 22 |
| OLNEY | Olney | Richland County | 16 |
| ALTON | Alton | Madison County | 15 |
| MARION | Marion | Williamson County | 15 |
| E ST LOUIS | East St. Louis | St. Clair County | 14 |
| MT VERNON | Mount Vernon | Jefferson County | 14 |
Plus 232 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
- 10 digits (NANPA: 10D)
- NANPA planning letters
- PL-595, PL-556, PL-544
Source: NANPA, NPA database of Oct 24, 2026.
Is 618 running out of numbers?
Previous forecast (October 2025): 2040, the same year.
Forecast exhaust year by edition
Source: NANPA NRUF forecast, April 2026 edition.
Who holds 618 prefixes
The five largest of 56 original holders
As listed by NANPA, not today’s carrier.
| Holder (as listed) | Prefixes | |
|---|---|---|
| Frontier North, Inc. | 126 16% | |
| Illinois Bell Tel Co. | 111 14% | |
| New Cingular Wireless PCS, LLC | 98 12% | |
| Verizon Wireless | 62 8% | |
| Level 3 Communications, LLC | 46 6% |
Source: NANPA CO codes of Oct 23, 2026.
Questions about area code 618
What area code is 618?
An Illinois area code, in service since 1947.
Where is 618 area code, and what time zone is it in?
Collinsville, IL; Central Time.
Why am I getting spam calls from 618?
689 FTC complaints from Sep 23 – Oct 22, 2026, most often about debt reduction (not verified by the FTC; caller ID can be spoofed).
Will 618 get a new area code?
NANPA forecasts exhaust in 4Q 2040; no relief planning listed.