Area Code 878

Pennsylvania (PA) • New Castle, Butler, Indiana, New Wilmington, Acme, Adah, Adamsburg, Adamsville • Eastern Time (ET)

What Stands Out

•Coverage: 1.5M people across 375 ZIP codes.
•Overlapping area codes: 724.
•Major cities: New Castle, Butler, Indiana.

Spotlight: Coverage

Snapshot highlights for area code 878.

Income

59th

Home values

48th

Poverty rate

50th

Area Code Basics

Primary State

Pennsylvania (PA)

States Served

Pennsylvania (PA)

Major Cities

New Castle, Butler, Indiana, New Wilmington, Acme, Adah, Adamsburg, Adamsville

Time Zone(s)

Eastern Time (ET)

Est. Population

1.5M

ZIP Codes

375

Data accuracy & methodology

This report aggregates 2020–2024 ACS 5-year estimates and geographic overlays for orientation. Area-code service areas can cross ZIP/state boundaries and change over time; verify official assignments with NANPA for critical use.