878 Sub Codes

Area Codes /


Beaver County - 878-201

Mercer County - 878-202

Washington County - 878-203

Mercer County - 878-204

Butler County - 878-208

Washington County - 878-218

Lawrence County - 878-222

Fayette County - 878-228

Armstrong County - 878-258

Armstrong County - 878-266

Butler County - 878-271

Westmoreland County - 878-295

Westmoreland County - 878-302

Beaver County - 878-313

Allegheny County - 878-332

Lawrence County - 878-333

Armstrong County - 878-422

Indiana County - 878-444

WESTMORELAND County - 878-553

Lawrence County - 878-668

Westmoreland County - 878-777

Indiana County - 878-888

Allegheny County - 878-999