US United States Major Regions Postal Code Details
๐๏ธ Mercer ยท Pennsylvania
16311
Carlton
16113
Clark
16114
Clarks Mills
16154
Delaware Twp
16121
Farrell
16124
Fredonia
16125
Greenville
16127
Grove City
16130
Hadley
16148
Hermitage
16133
Jackson Center
16134
Jamestown
16137
Mercer
16154
S Pymatuning Twp
16145
Sandy Lake
16148
Sharon
16150
Sharpsville
16151
Sheakleyville
16125
Shenango
16153
Stoneboro
16154
Transfer
16159
West Middlesex
16134
Westford
16161
Wheatland
๐ฎUS United States Regional Postal Code FAQ & Postal Regulations
๐ฎ What is the format of a US ZIP code?
Standard format is 5 digits (e.g., 10001). Extended format is ZIP+4 (9 digits like 10001-1234) with a hyphen.
๐ How to find the ZIP code for an address?
Use the USPS ZIP Code Lookup tool by entering the full address on the official USPS website.
โ ๏ธ What happens if I use a wrong ZIP code?
Mail may be delayed, returned, or lost. For important documents, use USPS tracking and verify the ZIP code.
๐ Do ZIP codes ever change?
Yes, USPS may update ZIP codes due to regional adjustments. Always confirm your ZIP code after an address change.
๐ฆ Is a ZIP code required for international mail to the US?
Absolutely. Always include the US ZIP code at the end of the address (e.g., New York, NY 10001 USA).