People Search Phones 3XX 331

331 Area Code

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Area Code info

Where is Area Code 331?

The 331 area code is located in the state of Illinois . 331 is one of the 357 three-digit telephone area codes in the USA. It covers roughly 28,770 unique phone numbers and 12,582,032 individuals near the cities of Aurora, Addison, Bartlett in our database.

Cities in the 331 Area Code

Other cities in area code 331 include

331 Area Code Time Zone

This time zone is known as the Central Standard Time (CST). The current time in this time zone is 8:37 AM on Jul 10, 2025.

In Service Date: Oct 7, 2007

331 Area Code Demographics

Statistics based on US Census data for the 331 area code

39.1

Median Age

$76.7k

Median Income

$251.6k

Median Home Value

12.6M

Total People

Nearby Area Codes

Reverse Phone Lookup 331-XXX-XXXX

Find out who the 331 phone number is registered under. Our free reverse phone lookup allows you to search records associated with a landline or cell phone number to help quickly identify who’s calling or texting you.

Nuwber will search through millions of phone records, including both landline and cell phone numbers. Being one of the fastest services available, we provide free reverse phone lookup results in seconds to let you know if we’ve found any matching records, such as name, address, and more.

Browse Phone Number Prefixes in the 331 Area Code

Landlines

116

Wireless Prefixes

8

Carriers

24

Countries

5

ZIP Codes

69

Prefix

(331) 200

County

Cook

City

Bartlett

Carrier

T-Mobile

Prefix

(331) 201

County

Dupage

City

Downers Grove

Carrier

Verizon Wireless

Prefix

(331) 202

County

Dupage

City

Elmhurst

Carrier

Sprint

Prefix

(331) 203

County

Kane

City

Aurora

Carrier

Sprint

Prefix

(331) 204

County

Dupage

City

Naperville

Carrier

Neutral Tandem

Prefix

(331) 205

County

Kane

City

Aurora

Carrier

Bandwidth.com

Prefix

(331) 206

County

Kane

City

Aurora

Carrier

Sprint

Prefix

(331) 207

County

Kendall

City

Yorkville

Carrier

Level 3

Prefix

(331) 208

County

Kane

City

Aurora

Carrier

Level 3

Prefix

(331) 209

County

Dupage

City

Elmhurst

Carrier

Comcast

Prefix

(331) 210

County

Kane

City

Saint Charles

Carrier

Neutral Tandem

Prefix

(331) 212

County

Kane

City

Aurora

Carrier

Verizon Wireless

Prefix

(331) 213

County

Dupage

City

Naperville

Carrier

At&T Mobility

Prefix

(331) 214

County

Dupage

City

Downers Grove

Carrier

Neutral Tandem

Prefix

(331) 215

County

Dupage

City

Naperville

Carrier

Cbeyond

Prefix

(331) 216

County

Kendall

City

Oswego

Carrier

Centurylink

Prefix

(331) 218

County

Dupage

City

Wheaton

Carrier

Comcast

Prefix

(331) 219

County

Kane

City

Aurora

Carrier

Telnyx

Prefix

(331) 220

County

Kane

City

Aurora

Carrier

Sprint

Prefix

(331) 221

County

Dupage

City

Elmhurst

Carrier

At&T Illinois

Prefix

(331) 222

County

Kane

City

Saint Charles

Carrier

Verizon Wireless

Prefix

(331) 223

County

Kane

City

Saint Charles

Carrier

Peerless Network

Prefix

(331) 225

County

Dupage

City

Elmhurst

Carrier

Sprint

Prefix

(331) 226

County

Dupage

City

Naperville

Carrier

Neutral Tandem

Prefix

(331) 227

County

Kane

City

Sugar Grove

Carrier

Verizon Wireless

Prefix

(331) 228

County

Kane

City

Saint Charles

Carrier

At&T Mobility

Prefix

(331) 229

County

Dupage

City

Naperville

Carrier

Comcast

Prefix

(331) 230

County

Kane

City

Aurora

Carrier

At&T Mobility

Prefix

(331) 231

County

Dupage

City

Naperville

Carrier

At&T Mobility

Prefix

(331) 232

County

Dupage

City

West Chicago

Carrier

T-Mobile

Prefix

(331) 233

County

Dupage

City

Downers Grove

Carrier

At&T Mobility

Prefix

(331) 234

County

Kane

City

Sugar Grove

Carrier

T-Mobile

Prefix

(331) 235

County

Kane

City

Saint Charles

Carrier

Verizon Wireless

Prefix

(331) 237

County

Dupage

City

Naperville

Carrier

At&T Mobility

Prefix

(331) 238

County

Dupage

City

Downers Grove

Carrier

At&T Mobility

Prefix

(331) 239

County

Kendall

City

Yorkville

Carrier

Neutral Tandem

Prefix

(331) 240

County

Dupage

City

West Chicago

Carrier

Comcast

Prefix

(331) 241

County

Dupage

City

Lombard

Carrier

West Telecom

Prefix

(331) 244

County

Dupage

City

Naperville

Carrier

At&T Mobility

Prefix

(331) 245

County

Cook

City

Bartlett

Carrier

T-Mobile

Prefix

(331) 248

County

Kane

City

Geneva

Carrier

Bandwidth.com

Prefix

(331) 250

County

Kane

City

Aurora

Carrier

T-Mobile

Prefix

(331) 251

County

Dupage

City

Downers Grove

Carrier

At&T Mobility

Prefix

(331) 252

County

Dupage

City

Warrenville

Carrier

At&T

Prefix

(331) 253

County

Cook

City

Lemont

Carrier

Bandwidth.com

Prefix

(331) 254

County

Kane

City

Sugar Grove

Carrier

Neutral Tandem

Prefix

(331) 255

County

Kane

City

Aurora

Carrier

Neutral Tandem

Prefix

(331) 256

County

Kane

City

Aurora

Carrier

Comcast

Prefix

(331) 262

County

Kane

City

Aurora

Carrier

At&T Mobility

Prefix

(331) 263

County

Dupage

City

Itasca

Carrier

Neutral Tandem

Prefix

(331) 276

County

Kane

City

Saint Charles

Carrier

Verizon Wireless

Prefix

(331) 281

County

Dupage

City

Naperville

Carrier

Comcast

Prefix

(331) 300

County

Kane

City

Aurora

Carrier

Bandwidth.com

Prefix

(331) 301

County

Kane

City

Aurora

Carrier

T-Mobile

Prefix

(331) 302

County

Kane

City

Aurora

Carrier

Comcast

Prefix

(331) 303

County

Kane

City

Elburn

Carrier

Neutral Tandem

Prefix

(331) 304

County

Cook

City

Bartlett

Carrier

T-Mobile

Prefix

(331) 305

County

Dupage

City

Naperville

Carrier

At&T Mobility

Prefix

(331) 307

County

Dupage

City

Lombard

Carrier

Neutral Tandem

Prefix

(331) 308

County

Cook

City

Bartlett

Carrier

T-Mobile

Prefix

(331) 310

County

Kane

City

Big Rock

Carrier

Bandwidth.com

Prefix

(331) 311

County

-

City

Non Emergency Services

Carrier

-

Prefix

(331) 315

County

Dupage

City

Lombard

Carrier

At&T Mobility

Prefix

(331) 318

County

Cook

City

Lemont

Carrier

Comcast

Prefix

(331) 321

County

Kane

City

Aurora

Carrier

Verizon Business

Prefix

(331) 330

County

Dupage

City

Naperville

Carrier

Level 3

Prefix

(331) 332

County

Dupage

City

Naperville

Carrier

At&T Mobility

Prefix

(331) 333

County

Dupage

City

Naperville

Carrier

Bandwidth.com

Prefix

(331) 334

County

Kane

City

Batavia

Carrier

Peerless Network

Prefix

(331) 385

County

Kane

City

Aurora

Carrier

T-Mobile

Prefix

(331) 401

County

Dupage

City

Naperville

Carrier

Metro Fibernet

Prefix

(331) 422

County

Kane

City

Saint Charles

Carrier

Level 3

Prefix

(331) 425

County

Kane

City

Aurora

Carrier

Bandwidth.com

Prefix

(331) 431

County

Kane

City

Aurora

Carrier

At&T Mobility

Prefix

(331) 442

County

Kane

City

Saint Charles

Carrier

At&T Mobility

Prefix

(331) 444

County

Dupage

City

Naperville

Carrier

Neutral Tandem

Prefix

(331) 452

County

Kane

City

Aurora

Carrier

Verizon Wireless

Prefix

(331) 454

County

Kane

City

Aurora

Carrier

At&T Mobility

Prefix

(331) 456

County

Dupage

City

Roselle

Carrier

First Communications

Prefix

(331) 457

County

Dupage

City

Naperville

Carrier

Xo Communications

Prefix

(331) 462

County

Dupage

City

Lombard

Carrier

Xo Communications

Prefix

(331) 465

County

Dupage

City

West Chicago

Carrier

T-Mobile

Prefix

(331) 466

County

Dupage

City

Glen Ellyn

Carrier

Telnyx

Prefix

(331) 472

County

Dupage

City

Naperville

Carrier

Cbeyond

Prefix

(331) 481

County

Dupage

City

Downers Grove

Carrier

Level 3

Prefix

(331) 511

County

-

City

Travel Information Services

Carrier

-

Prefix

(331) 551

County

Dupage

City

Lombard

Carrier

Cimco Communications

Prefix

(331) 555

County

-

City

Directory Assistance

Carrier

-

Prefix

(331) 575

County

Kane

City

Aurora

Carrier

Sprint

Prefix

(331) 588

County

Kane

City

Saint Charles

Carrier

At&T Mobility

Prefix

(331) 611

County

-

City

Telco Repair Service

Carrier

-

Prefix

(331) 625

County

Dupage

City

Downers Grove

Carrier

Bandwidth.com

Prefix

(331) 642

County

Dupage

City

Elmhurst

Carrier

Bandwidth.com

Prefix

(331) 643

County

Kane

City

Aurora

Carrier

Verizon Business

Prefix

(331) 645

County

Dupage

City

Elmhurst

Carrier

Sprint

Prefix

(331) 684

County

Kane

City

Aurora

Carrier

Paetec

Prefix

(331) 700

County

-

City

Intralata Pic Validation

Carrier

-

Prefix

(331) 701

County

Dupage

City

Naperville

Carrier

T-Mobile

Prefix

(331) 702

County

Dupage

City

Naperville

Carrier

Comcast

Prefix

(331) 703

County

Dupage

City

West Chicago

Carrier

Neutral Tandem

Prefix

(331) 704

County

Kane

City

Kaneville

Carrier

Bandwidth.com

Prefix

(331) 707

County

Kane

City

Aurora

Carrier

T-Mobile

Prefix

(331) 716

County

Dupage

City

Wheaton

Carrier

Bandwidth.com

Prefix

(331) 717

County

Kendall

City

Oswego

Carrier

Bandwidth.com

Prefix

(331) 725

County

Kendall

City

Oswego

Carrier

At&T Mobility

Prefix

(331) 757

County

Cook

City

Lemont

Carrier

Neutral Tandem

Prefix

(331) 771

County

Kane

City

Saint Charles

Carrier

At&T Internet Services

Prefix

(331) 775

County

Dupage

City

Downers Grove

Carrier

Comcast

Prefix

(331) 777

County

Dupage

City

Downers Grove

Carrier

Comcast

Prefix

(331) 801

County

Dupage

City

Downers Grove

Carrier

Neutral Tandem

Prefix

(331) 803

County

Cook

City

Lemont

Carrier

T-Mobile

Prefix

(331) 806

County

Dupage

City

Wheaton

Carrier

Comcast

Prefix

(331) 808

County

Kendall

City

Plano

Carrier

Bandwidth.com

Prefix

(331) 814

County

Dupage

City

Naperville

Carrier

At&T Mobility

Prefix

(331) 826

County

Dupage

City

Elmhurst

Carrier

Level 3

Prefix

(331) 871

County

Dupage

City

West Chicago

Carrier

At&T Mobility

Prefix

(331) 888

County

Dupage

City

Warrenville

Carrier

Bandwidth.com

Prefix

(331) 900

County

Dupage

City

Elmhurst

Carrier

Peerless Network

Prefix

(331) 901

County

Kane

City

Saint Charles

Carrier

Bandwidth.com

Prefix

(331) 903

County

Dupage

City

Downers Grove

Carrier

Comcast

Prefix

(331) 979

County

Dupage

City

Elmhurst

Carrier

Local Access

Prefix

(331) 980

County

Kane

City

Aurora

Carrier

T-Mobile

Prefix

(331) 998

County

Dupage

City

Downers Grove

Carrier

Verizon Wireless

Prefix

(331) 999

County

Kendall

City

Oswego

Carrier

Bandwidth.com