779 Sub Codes

Area Codes /


Winnebago County - 779-200

LaSalle County - 779-201

Jo Daviess County - 779-202

Winnebago County - 779-203

Grundy County - 779-204

Will County - 779-205

Will County - 779-206

Winnebago County - 779-207

Winnebago County - 779-208

DeKalb County - 779-209

Winnebago County - 779-210

DeKalb County - 779-212

LaSalle County - 779-213

Jo Daviess County - 779-214

LaSalle County - 779-215

Will County - 779-216

Iroquois County - 779-218

McHenry County - 779-220

Winnebago County - 779-221

DeKalb County - 779-222

NA County - 779-223

Will County - 779-225

Ogle County - 779-226

Will County - 779-227

Grundy County - 779-228

Bureau County - 779-229

Will County - 779-232

Will County - 779-233

Will County - 779-234

Iroquois County - 779-235

Kankakee County - 779-236

Kankakee County - 779-240

Whiteside County - 779-245

Lee County - 779-251

Winnebago County - 779-253

Will County - 779-254

NA County - 779-256

Will County - 779-279

Winnebago County - 779-300

Kankakee County - 779-301

McHenry County - 779-302

Will County - 779-324

Will County - 779-333

Winnebago County - 779-348

Winnebago County - 779-368

Will County - 779-379

DeKalb County - 779-382

DeKalb County - 779-400

Winnebago County - 779-423

Will County - 779-429

Bureau County - 779-432

Will County - 779-435

McHenry County - 779-444

Will County - 779-456

Winnebago County - 779-475

Winnebago County - 779-500

Winnebago County - 779-513

Kankakee County - 779-529

Winnebago County - 779-537

Ogle County - 779-545

McHenry County - 779-548

Boone County - 779-552

LaSalle County - 779-601

Winnebago County - 779-696

Kankakee County - 779-701

Will County - 779-702

Will County - 779-703

McHenry County - 779-704

DeKalb County - 779-706

Will County - 779-707

McHenry County - 779-713

Bureau County - 779-717

Winnebago County - 779-770

Winnebago County - 779-771

Winnebago County - 779-772

Winnebago County - 779-774

DeKalb County - 779-777

McHenry County - 779-800

Will County - 779-803

Livingston County - 779-804

Lee County - 779-861

NA County - 779-863

Will County - 779-875

Winnebago County - 779-888

McHenry County - 779-901

Will County - 779-903

Winnebago County - 779-970

DeKalb County - 779-978

McHenry County - 779-994

Kendall County - 779-999