Castle Shannon, Pennsylvania

Nearest ZIP codes to Castle Shannon

These are the ZIP codes nearest to Castle Shannon, each listed with the post office it is named after.

Area codes for Castle Shannon

• Area code 412

  In service since 1947. Shares its area with 878. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

• Area code 878

  In service since August 17, 2001. Shares its area with 412 and 724. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Time zone

Castle Shannon is in the Eastern Time zone.

Towns near Castle Shannon

• Dormont3.4 km (2.1 mi)
• Brentwood3.8 km (2.4 mi)
• Bethel Park5.3 km (3.3 mi)
• Mount Oliver5.8 km (3.6 mi)
• Green Tree6.4 km (4.0 mi)
• Baldwin6.5 km (4.0 mi)
• Pleasant Hills6.5 km (4.0 mi)
• Heidelberg6.8 km (4.2 mi)