156421 Zip Now

Most students in this ZIP Code attend the Norwin School District . Demographics & Economy

: A full 9-digit code like 15642-1XXX , where the "1" is the start of the four-digit extension used for more precise mail sorting.

Was this information for , or were you looking for a specific 9-digit ZIP code ? ZIP Code™ - The Basics - FAQ | USPS 156421 zip

💡 : U.S. ZIP Codes are always 5 digits in their basic form; the expanded ZIP+4 system uses 9 digits .

Approximately 33,000 residents as of recent census estimates. Most students in this ZIP Code attend the

Retail, healthcare, and light manufacturing, with many residents commuting to Pittsburgh for work. Potential Alternatives If "156421" was a typo, you might be looking for: 15642 : Irwin, PA (the most likely intent). 16421 : A ZIP Code in Erie County, PA .

Served by U.S. Route 30 and the Pennsylvania Turnpike (I-76), which has an exit in the area. ZIP Code™ - The Basics - FAQ | USPS 💡 : U

A mix of historic borough residential areas and suburban developments.