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815 Area Code 🌍☎️

Area Code Profile · Illinois

The 815 area code is located in the state of Illinois and covers 275 cities, serving a total population of approximately 1,529,753. Major cities covered by the 815 area code include Rockford, Joliet, Bolingbrook, Tinley Park, DeKalb (which represents the most populated areas). There are a total of 782 telephone prefix exchanges in this area code, which support an estimated 7,820,000 active or assignable phone numbers. These prefix lines are operated by 59 distinct carriers, with Rockford as the primary rate center location.

Central Time275 Cities782 Prefixes

Reverse Phone Lookup in Rockford, Illinois

Unmask unknown callers, verify telemarketing reports, and view detailed owner information for any phone number beginning with area code (815).

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2

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3

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Access location details, line type, carrier, owner information, and safety levels.

Neighborhood Demographics

Calculated demographics and census summary estimations for area code 815.

34.4 y/oMedian Age
$114,400Median Income
$429,000Median Home Value
1,529,753Total Population

Telemarketer Complaints

Most recent complaints and comments for phone numbers beginning with 815.

Did you receive an unwanted call from a (815) phone number?

Help the community identify spammers by filing a comment.

(815) 688-2394May 17, 2026Political
Pre-recorded campaign call promoting a local candidate. Did not respect my request to be placed on the Do Not Call list.
See Details
(815) 701-2411May 16, 2026Scam / Fraud
Received a text and follow-up call saying my bank account was locked due to suspicious transactions. Included a link to a fake login portal. Do not click!
See Details
(815) 714-2428May 20, 2026Robocall
Robocall regarding health insurance plans. Said my current coverage was expiring and offered a "free consultation". Calling multiple times a day from slightly different numbers.
See Details
(815) 727-2445May 19, 2026Scam / Fraud
Robocall claiming to be from the IRS. Stated that my Social Security Number has been flagged and suspended. Asked to press 1 to speak with an agent. Obvious phishing scam.
See Details
(815) 740-2462May 18, 2026Robocall
Received a silent call. When I answered, there was just dead air for 5 seconds before it automatically disconnected. Likely an automated system testing for active numbers.
See Details

Cities in the 815 Area Code

The most populous cities in area code 815 are: Rockford (152,871), Joliet (147,433), Bolingbrook (73,366), Tinley Park (56,703), and DeKalb (43,862).

Other cities in the 815 area code include:

Crystal Lake, Romeoville, Plainfield, Kankakee, McHenry, Freeport, Belvidere, Lockport, Woodstock, New Lenox, Homer Glen, Loves Park, Machesney Park, Crest Hill, Ottawa, Mokena, Bourbonnais, Frankfort, Sycamore, Bradley, Dixon, Shorewood, Sterling, Streator, Morris.

CityPopulation% in Area Code
Rockford152,871100%
Joliet147,43394%
Bolingbrook73,3669%
Tinley Park56,70310%
DeKalb43,862100%
Crystal Lake40,74397%
Romeoville39,68091%
Plainfield39,58180%
Kankakee27,537100%
McHenry26,992100%
Freeport25,638100%
Belvidere25,585100%
Lockport24,83994%
Woodstock24,770100%
New Lenox24,394100%
Homer Glen24,22020%
Loves Park23,996100%
Machesney Park23,499100%
Crest Hill20,837100%
Ottawa18,768100%

Showing top 20 of 275 cities.

What Time Zone is Area Code 815?

Central Time Zone

Abbreviation: CT · UTC Offset: UTC-6

The 815 area code lies within the Central Time Zone (CT, UTC-6).

Nearby Area Codes

217Springfield, Illinois224Elgin, Illinois309Peoria, Illinois312Chicago, Illinois331Aurora, Illinois447Springfield, Illinois464Cicero, Illinois618Belleville, Illinois630Aurora, Illinois708Cicero, Illinois

Phone Prefixes in the 815 Area Code

782 prefixes found · 59 carriers · 200 rate centers

PrefixCarrierRate Center
(815) 200PAETEC COMMUNICATIONS, INC. - ILLA SALLE
(815) 201BANDWIDTH.COM CLEC, LLC - ILSHERIDAN
(815) 202NEW CINGULAR WIRELESS PCS, LLC - ILOGLESBY
(815) 203USA MOBILITY WIRELESS, INC.JOLIET
(815) 204USA MOBILITY WIRELESS, INC.CRYSTAL LK
(815) 205CENTURYLINK COMMUNICATIONS, LLCCOAL CITY
(815) 206ILLINOIS BELL TEL COWOODSTOCK
(815) 207AT&T - LOCALJOLIET
(815) 208MEDIACOM TELEPHONY OF ILLINOIS, LLC - ILFULTON
(815) 209LEVEL 3 COMMUNICATIONS, LLC - ILROCKFORD
(815) 210NEW CINGULAR WIRELESS PCS, LLC - ILJOLIET
(815) 212T-MOBILE USA, INC.JOLIET
(815) 213UNITED STATES CELLULAR - ILSTERLING
(815) 214RCN TELECOM SERVICES OF ILLINIOS, INC. - ILKANKAKEE
(815) 215FIRST COMMUNICATIONS, LLC - ILNEW LENOX
(815) 216CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ILKANKAKEE
(815) 217DIGITAL NETWORK ACCESS COMMUNICATIONS, INC. - ILDE KALB
(815) 218CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ILROCKFORD
(815) 219METROPCS, INC.CRYSTAL LK
(815) 220ILLINOIS BELL TEL COLA SALLE
(815) 221TELEPORT COMMUNICATIONS AMERICA, LLC - ILLOCKPORT
(815) 222CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ILROCKFORD
(815) 223ILLINOIS BELL TEL COLA SALLE
(815) 224ILLINOIS BELL TEL COLA SALLE
(815) 225CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -ILMILLEDGEVL
(815) 226ILLINOIS BELL TEL COROCKFORD
(815) 227ILLINOIS BELL TEL COROCKFORD
(815) 228NEW CINGULAR WIRELESS PCS, LLC - ILOGLESBY
(815) 229ILLINOIS BELL TEL COROCKFORD
(815) 230LEVEL 3 COMMUNICATIONS, LLC - ILPLAINFIELD
(815) 231ILLINOIS BELL TEL COROCKFORD
(815) 232FRONTIER NORTH, INC. - ILFREEPORT
(815) 233FRONTIER NORTH, INC. - ILFREEPORT
(815) 234FRONTIER NORTH, INC. - ILBYRON
(815) 235FRONTIER NORTH, INC. - ILFREEPORT
(815) 236NEW CINGULAR WIRELESS PCS, LLC - ILWOODSTOCK
(815) 237ILLINOIS BELL TEL COGARDNER
(815) 238CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ILFREEPORT
(815) 239FRONTIER NORTH, INC. - ILPECATONICA
(815) 240CHARTER FIBERLINK - ILLINOIS, LLC - ILROCK CUT
(815) 241AMERICAN MESSAGING SERVICES, LLCNORTHBROOK
(815) 242BANDWIDTH.COM CLEC, LLC - ILMINOOKA
(815) 243UNITED STATES CELLULAR - ILROCKFORD
(815) 244GALLATIN RIVER COMMUNICATIONS DBA CENTURYLINKMT CARROLL
(815) 245NEW CINGULAR WIRELESS PCS, LLC - ILWOODSTOCK
(815) 246FRONTIER NORTH, INC. - ILEARLVILLE
(815) 247FRONTIER NORTH, INC. - ILSEWARD
(815) 248FRONTIER NORTH, INC. - ILDURAND
(815) 249FRONTIER NORTH, INC. - ILGRANDRIDGE
(815) 250COMCAST IP PHONE, LLCLA SALLE
(815) 251GALLATIN RIVER COMMUNICATIONS DBA CENTURYLINKNELSON
(815) 252NEW CINGULAR WIRELESS PCS, LLC - ILOGLESBY
(815) 253FRONTIER COMMUNICATIONS OF ILLINOIS, INC.KEMPTON
(815) 254ILLINOIS BELL TEL COPLAINFIELD
(815) 255US XCHANGE OF ILLINOIS LLC DBA CHOICE ONE COMM ILMINOOKA
(815) 256STELLE TEL. CO.STELLE
(815) 257CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ILSTREATOR
(815) 258NEW CINGULAR WIRELESS PCS, LLC - ILJOLIET
(815) 259GALLATIN RIVER COMMUNICATIONS DBA CENTURYLINKTHOMSON
(815) 260T-MOBILE USA, INC.JOLIET
(815) 261MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ILCRYSTAL LK
(815) 262CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ILROCKFORD
(815) 263CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ILKANKAKEE
(815) 264FRONTIER NORTH, INC. - ILWATERMAN
(815) 265ILLINOIS BELL TEL COGILMAN
(815) 266FRONTIER NORTH, INC. - ILFREEPORT
(815) 267MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ILPLAINFIELD
(815) 268ILLINOIS BELL TEL COONARGA
(815) 269FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - ILDANFORTH
(815) 270CHARTER FIBERLINK - ILLINOIS, LLC - ILROSCOE
(815) 271MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ILMCHENRY
(815) 272MCIMETRO ACCESS TRANSMISSION SERVICES LLC - ILJOLIET
(815) 273GALLATIN RIVER COMMUNICATIONS DBA CENTURYLINKSAVANNA
(815) 274NEW CINGULAR WIRELESS PCS, LLC - ILJOLIET
(815) 275CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ILFREEPORT
(815) 276TELEPORT COMMUNICATIONS AMERICA, LLC - ILCRYSTAL LK
(815) 277TELEPORT COMMUNICATIONS AMERICA, LLC - ILFRANKFORT
(815) 278CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ILKANKAKEE
(815) 279AMERICAN MESSAGING SERVICES, LLCKANKAKEE
(815) 280TELEPORT COMMUNICATIONS AMERICA, LLC - ILJOLIET
(815) 281UNITED STATES CELLULAR - ILGALENA
(815) 282ILLINOIS BELL TEL COROCKFORD
(815) 283MEDIACOM TELEPHONY OF ILLINOIS, LLC - ILWATERMAN
(815) 284GALLATIN RIVER COMMUNICATIONS DBA CENTURYLINKDIXON
(815) 285GALLATIN RIVER COMMUNICATIONS DBA CENTURYLINKDIXON
(815) 286FRONTIER NORTH, INC. - ILHINCKLEY
(815) 287ILLINOIS BELL TEL COVERONA
(815) 288GALLATIN RIVER COMMUNICATIONS DBA CENTURYLINKDIXON
(815) 289UNITED STATES CELLULAR - ILROCKFORD
(815) 290AT&T CORP.MINOOKA
(815) 291UNITED STATES CELLULAR - ILFREEPORT
(815) 292BERGEN TEL. CO. - ILSO BERGEN
(815) 293ILLINOIS BELL TEL COLOCKPORT
(815) 294USA MOBILITY WIRELESS, INC.LA GRANGE
(815) 295T-MOBILE USA, INC.KANKAKEE
(815) 296TELNYX LLCROCKFORD
(815) 297FRONTIER NORTH, INC. - ILFREEPORT
(815) 298CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ILROCKFORD
(815) 299UNITED STATES CELLULAR - ILROCKFORD
(815) 300ILLINOIS BELL TEL CONEW LENOX

Showing first 100 of 782 prefixes.

Frequently Asked Questions

Where is area code 815?
Area code 815 is located in Illinois, covering cities including Rockford, Joliet, Bolingbrook.
What time zone is area code 815?
Area code 815 is in the Central Time Zone (CT, UTC-6).
What state is area code 815?
Area code 815 is in Illinois.