List of Cities in the 331 Area Code

Bartlett - 331-200

Downers Grove - 331-201

Elmhurst - 331-202

Aurora - 331-203

Aurora - 331-205

Aurora - 331-206

Yorkville - 331-207

Aurora - 331-208

Elmhurst - 331-209

Saint Charles - 331-210

Aurora - 331-212

Naperville - 331-213

Downers Grove - 331-214

Naperville - 331-215

Oswego - 331-216

Wheaton - 331-218

Aurora - 331-220

Elmhurst - 331-221

Saint Charles - 331-222

Saint Charles - 331-223

Elmhurst - 331-225

SUGAR GROVE - 331-227

Saint Charles - 331-228

Naperville - 331-229

Sugar Grove - 331-234

West Chicago - 331-240

Bartlett - 331-245

Geneva - 331-248

Aurora - 331-250

Downers Grove - 331-251

Lemont - 331-253

Sugar Grove - 331-254

Aurora - 331-256

Aurora - 331-262

Saint Charles - 331-276

Naperville - 331-281

Aurora - 331-301

Aurora - 331-302

Elburn - 331-303

Bartlett - 331-304

Naperville - 331-305

Lombard - 331-307

Bartlett - 331-308

Big Rock - 331-310

Lemont - 331-318

Aurora - 331-321

Naperville - 331-330

Naperville - 331-332

Naperville - 331-333

Saint Charles - 331-422

Aurora - 331-425

Aurora - 331-431

Saint Charles - 331-442

Naperville - 331-444

Aurora - 331-452

Aurora - 331-454

Roselle - 331-456

Naperville - 331-457

Lombard - 331-462

West Chicago - 331-465

Naperville - 331-472

Downers Grove - 331-481

Lombard - 331-551

NA - 331-552

NA - 331-553

Aurora - 331-575

Saint Charles - 331-588

ELMHURST - 331-591

Downers Grove - 331-625

Elmhurst - 331-642

Aurora - 331-643

Elmhurst - 331-645

Aurora - 331-684

Naperville - 331-701

Naperville - 331-702

West Chicago - 331-703

Kaneville - 331-704

Oswego - 331-725

Downers Grove - 331-777

Downers Grove - 331-801

Lemont - 331-803

Wheaton - 331-806

Plano - 331-808

Naperville - 331-814

GENEVA - 331-825

Elmhurst - 331-826

Warrenville - 331-888

Saint Charles - 331-901

Downers Grove - 331-903

Elmhurst - 331-979

Aurora - 331-980

Downers Grove - 331-998

Oswego - 331-999