US United States Major Regions Postal Code Details
🏛️ Chester · Pennsylvania
19310Atglen
Atglen chester pennsylvania 19310 United States
19311Avondale
Avondale chester pennsylvania 19311 United States
19312Berwyn
Berwyn chester pennsylvania 19312 United States
19421Birchrunville
Birchrunville chester pennsylvania 19421 United States
19316Brandamore
Brandamore chester pennsylvania 19316 United States
19520Bulltown
Bulltown chester pennsylvania 19520 United States
19318Chatham
Chatham chester pennsylvania 19318 United States
19425Chester Springs
Chester Springs chester pennsylvania 19425 United States
19320Coatesville
Coatesville chester pennsylvania 19320 United States
19330Cochranville
Cochranville chester pennsylvania 19330 United States
19432Devault
Devault chester pennsylvania 19432 United States
19333Devon
Devon chester pennsylvania 19333 United States
19372Downingtown
Downingtown chester pennsylvania 19372 United States
19320E Fallowfield
E Fallowfield chester pennsylvania 19320 United States
19480Eagle
Eagle chester pennsylvania 19480 United States
19320East Fallowfield Township
East Fallowfield Township chester pennsylvania 19320 United States
19520Elverson
Elverson chester pennsylvania 19520 United States
19341Exton
Exton chester pennsylvania 19341 United States
19341Franklin Center
Franklin Center chester pennsylvania 19341 United States
19355Frazer
Frazer chester pennsylvania 19355 United States
19381Gay Street
Gay Street chester pennsylvania 19381 United States
19343Glenmoore
Glenmoore chester pennsylvania 19343 United States
19344Honey Brook
Honey Brook chester pennsylvania 19344 United States
19345Immaculata
Immaculata chester pennsylvania 19345 United States
19520Joanna
Joanna chester pennsylvania 19520 United States
19346Kelton
Kelton chester pennsylvania 19346 United States
19347Kemblesville
Kemblesville chester pennsylvania 19347 United States
19348Kennett Square
Kennett Square chester pennsylvania 19348 United States
19442Kimberton
Kimberton chester pennsylvania 19442 United States
19350Landenberg
Landenberg chester pennsylvania 19350 United States
19351Lewisville
Lewisville chester pennsylvania 19351 United States
19352Lincoln Univ
Lincoln Univ chester pennsylvania 19352 United States
19352Lincoln University
Lincoln University chester pennsylvania 19352 United States
19353Lionville
Lionville chester pennsylvania 19353 United States
19520Loag
Loag chester pennsylvania 19520 United States
19354Lyndell
Lyndell chester pennsylvania 19354 United States
19355Malvern
Malvern chester pennsylvania 19355 United States
19520Marsh
Marsh chester pennsylvania 19520 United States
19357Mendenhall
Mendenhall chester pennsylvania 19357 United States
19358Modena
Modena chester pennsylvania 19358 United States
19360New London
New London chester pennsylvania 19360 United States
19352New London Township
New London Township chester pennsylvania 19352 United States
19362Nottingham
Nottingham chester pennsylvania 19362 United States
19363Oxford
Oxford chester pennsylvania 19363 United States
19301Paoli
Paoli chester pennsylvania 19301 United States
19457Parker Ford
Parker Ford chester pennsylvania 19457 United States
19365Parkesburg
Parkesburg chester pennsylvania 19365 United States
19460Phoenixville
Phoenixville chester pennsylvania 19460 United States
19520Pine Swamp
Pine Swamp chester pennsylvania 19520 United States
19366Pocopson
Pocopson chester pennsylvania 19366 United States
19367Pomeroy
Pomeroy chester pennsylvania 19367 United States
19465Pottstown
Pottstown chester pennsylvania 19465 United States
19493Providian Agon
Providian Agon chester pennsylvania 19493 United States
19320Romansville
Romansville chester pennsylvania 19320 United States
19369Sadsburyville
Sadsburyville chester pennsylvania 19369 United States
19470Saint Peters
Saint Peters chester pennsylvania 19470 United States
19398Southeastern
Southeastern chester pennsylvania 19398 United States
19475Spring City
Spring City chester pennsylvania 19475 United States
19310Steelville
Steelville chester pennsylvania 19310 United States
19371Suplee
Suplee chester pennsylvania 19371 United States
19496The Vanguard Group
The Vanguard Group chester pennsylvania 19496 United States
19372Thorndale
Thorndale chester pennsylvania 19372 United States
19374Toughkenamon
Toughkenamon chester pennsylvania 19374 United States
19312Tredyffrin
Tredyffrin chester pennsylvania 19312 United States
19375Unionville
Unionville chester pennsylvania 19375 United States
19480Uwchland
Uwchland chester pennsylvania 19480 United States
19481Valley Forge
Valley Forge chester pennsylvania 19481 United States
19320Valley Township
Valley Township chester pennsylvania 19320 United States
19376Wagontown
Wagontown chester pennsylvania 19376 United States
19335West Bradford
West Bradford chester pennsylvania 19335 United States
19343West Brandywine
West Brandywine chester pennsylvania 19343 United States
19381West Chester
West Chester chester pennsylvania 19381 United States
19383West Chester University
West Chester University chester pennsylvania 19383 United States
19390West Grove
West Grove chester pennsylvania 19390 United States
19395Westtown
Westtown chester pennsylvania 19395 United States
📋 United States Address and Delivery Guidance
📮
Use a Complete Delivery Address:
Include the recipient name, building or street address, locality, region where applicable, postal code when the destination uses one, and the destination country or territory.
🌍
Follow Local Address Conventions:
Use the language, character set and address order requested by the recipient, official postal operator or carrier. Do not assume every destination uses the same postal-code format.
✅
Verify Before Dispatch:
Confirm the postal code, service coverage and any customs or carrier requirements with the recipient and the relevant official postal operator before shipping.
💡
Delivery Information Is Context-Specific:
Postal codes help routing only in territories that use them. Accurate recipient details remain essential for delivery in every destination.
Postal information, sources and verification
Use this page as a routing reference and confirm the complete address, postal code format and delivery restrictions with the relevant official postal operator or carrier before dispatch.
Editorial and service accountability
This postal-code reference is maintained by the 56ok.com logistics-content team for international shipping preparation. It is reviewed against publicly available postal-operator information; it is not an official postal authority and does not replace carrier or customs instructions.
This reference is maintained as postal and carrier information changes. Need a correction? Contact our team.
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📮United States Postal FAQ and delivery guidance
📮 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.
🔍 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.
⚠️ 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.
🔄 Do ZIP codes ever change?
Yes, USPS may update ZIP codes due to regional adjustments. Always confirm your ZIP code after an address change.
📦 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).
