815 area code: where it is and which numbers are reported
815 covers Rockford, Joliet and Crystal Lake in Illinois. 1,619 numbers in it drew 1,718 complaints between Oct 2, 2025 and Oct 31, 2026.
About area code 815
LocationIllinois
Main citiesRockford, Joliet, Crystal Lake, Plainfield
Local time now
Time zoneCentral
In service since1947
Shares its area with779
Numbers reported1,619
Complaints1,718
Most reported asOther, debt reduction, imposters
Reported 815 numbers
Most reported first. A number links to its own page once it has complaints from two or more days.
(815) 725-3638 9 complaints Otherlast Oct 28, 2026
(815) 296-7233 5 complaints Otherlast Oct 9, 2026
(815) 665-0648 4 complaints Debt reductionlast Sep 8, 2026
(815) 916-8205 3 complaints Debt reductionlast Oct 13, 2026
(815) 908-2112 3 complaints Debt reductionlast Sep 30, 2026
(815) 327-2585 3 complaints Dropped calllast Sep 16, 2026
(815) 484-6227 3 complaints Otherlast Sep 16, 2026
(815) 916-8432 3 complaints Otherlast Aug 19, 2026
(815) 598-5904 2 complaints Otherlast Oct 23, 2026
(815) 314-0760 2 complaints Tech supportlast Oct 21, 2026
(815) 437-4875 2 complaints Otherlast Oct 16, 2026
(815) 733-9948 2 complaints Debt reductionlast Oct 15, 2026
(815) 242-4045 2 complaints Otherlast Oct 14, 2026
(815) 264-1253 2 complaints Otherlast Oct 13, 2026
(815) 200-4385 2 complaints Live callslast Oct 9, 2026
(815) 441-9772 2 complaints Debt reductionlast Oct 9, 2026
(815) 447-5322 2 complaints Otherlast Oct 9, 2026
(815) 618-1319 2 complaints Debt reductionlast Oct 9, 2026
(815) 415-0543 2 complaints Debt reductionlast Oct 1, 2026
(815) 249-2014 2 complaints Dropped calllast Sep 30, 2026
(815) 205-3326 2 complaints Otherlast Sep 29, 2026
(815) 320-8675 2 complaints Otherlast Sep 29, 2026
(815) 320-8704 2 complaints Otherlast Sep 29, 2026
(815) 736-7520 2 complaints Debt reductionlast Sep 28, 2026
(815) 919-7243 2 complaints Otherlast Sep 25, 2026
The 25 most reported of 1,619 numbers.
When 815 numbers were reported
Complaints a month, last 13 months
566 in the busiest month
NovDecJanFebMarAprMayJunJulAugSepOctNov
| November 2025: 4 |
| December 2025: 3 |
| January 2026: 3 |
| February 2026: 6 |
| March 2026: 3 |
| April 2026: 9 |
| May 2026: 9 |
| June 2026: 17 |
| July 2026: 363 |
| August 2026: 566 |
| September 2026: 369 |
| October 2026: 366 |
Hour of day, as reported in complaints
Busiest around 11 am
12 am6 am12 pm6 pm
| 12 am: 5 |
| 1 am: 5 |
| 2 am: 3 |
| 3 am: 3 |
| 4 am: 2 |
| 5 am: 2 |
| 6 am: 14 |
| 7 am: 18 |
| 8 am: 68 |
| 9 am: 200 |
| 10 am: 188 |
| 11 am: 217 |
| 12 pm: 190 |
| 1 pm: 126 |
| 2 pm: 124 |
| 3 pm: 114 |
| 4 pm: 98 |
| 5 pm: 101 |
| 6 pm: 77 |
| 7 pm: 40 |
| 8 pm: 23 |
| 9 pm: 10 |
| 10 pm: 6 |
| 11 pm: 4 |
The most reported 815 prefixes
Complaints by the three digits after the area code.
- (815) 691
- 654%
- (815) 916
- 614%
- (815) 733
- 583%
- (815) 736
- 513%
- (815) 923
- 463%
815 numbers that unwanted calls gave to contact
Numbers in this area code that complaints named as the number a call or text asked people to contact.
(815) 328-7552 1 complaint
(815) 415-2920 1 complaint
(815) 498-1932 1 complaint
(815) 940-9764 1 complaint
(815) 977-8345 1 complaint
(815) 219-4652 1 complaint
(815) 290-3442 1 complaint
(815) 379-3716 1 complaint
(815) 449-8150 1 complaint
(815) 521-4462 1 complaint
Towns and cities in area code 815
90 places its numbers are assigned to, the ones with the most numbers first.
- Rockford
- Joliet
- Crystal Lake
- Plainfield
- McHenry
- DeKalb
- Woodstock
- Freeport
- Lockport
- Peru
- Dixon
- Romeoville
- Morris
- Ottawa
- New Lenox
- Frankfort
- Sterling
- Princeton
- Mendota
- Belvidere
- Rochelle
- Wonder Lake
- Spring Valley
- Streator
- Galena
- Pontiac
- Sycamore
- Milledgeville
- Byron
- Gardner
- Pecatonica
- Mount Carroll
- Earlville
- Durand
- Gilman
- Savanna
- Hinckley
- Winnebago
- Granville
- Seneca
- Lena
- Walnut
- South Beloit
- Elwood
- Herscher
- Watseka
- Cissna Park
- Braidwood
- Manteno
- Momence
- Wilmington
- Manhattan
- Lanark
- Sheridan
- Somonauk
- Prophetstown
- Marengo
- Dwight
- Fulton
- Roscoe
- Rockton
- Coal City
- Hebron
- Forrest
- North Utica
- Spring Grove
- Richmond
- Fairbury
- Clifton
- Newark
- Oregon
- Mount Morris
- Warren
- East Dubuque
- Poplar Grove
- Morrison
- Genoa
- Sandwich
- Marseilles
- Shabbona
- Amboy
- Elizabeth
- Oglesby
- Union
- Kankakee
- Forreston
- Harvard
- Chenoa
- Polo
- Stockton
Check a number
Enter a number. Bewary checks it against FTC and FCC scam and robocall complaints and its scam lists.
Sources
Complaints consumers filed with the FCC and FTC, Oct 2, 2025 to Oct 31, 2026. Bewary counts the reports and does not check each one. Scammers can fake the number that shows on your phone, so a reported number may belong to someone who never called you.