US United States Major Regions Postal Code Details
🏛️ Rock Island · Illinois
61232Andalusia
Andalusia rock island illinois 61232 United States
61244Babcock
Babcock rock island illinois 61244 United States
61236Barstow
Barstow rock island illinois 61236 United States
61237Buffalo Prairie
Buffalo Prairie rock island illinois 61237 United States
61275Byron Hills
Byron Hills rock island illinois 61275 United States
61244Campbells Island
Campbells Island rock island illinois 61244 United States
61239Carbon Cliff
Carbon Cliff rock island illinois 61239 United States
61240Coal Valley
Coal Valley rock island illinois 61240 United States
61275Coe
Coe rock island illinois 61275 United States
61242Cordova
Cordova rock island illinois 61242 United States
61244East Moline
East Moline rock island illinois 61244 United States
61256Hampton
Hampton rock island illinois 61256 United States
61257Hillsdale
Hillsdale rock island illinois 61257 United States
61259Illinois City
Illinois City rock island illinois 61259 United States
61279Marston
Marston rock island illinois 61279 United States
61244Meersman
Meersman rock island illinois 61244 United States
61244Merry Oaks
Merry Oaks rock island illinois 61244 United States
61264Milan
Milan rock island illinois 61264 United States
61275Mobet Meadows
Mobet Meadows rock island illinois 61275 United States
61266Moline
Moline rock island illinois 61266 United States
61264Oak Grove
Oak Grove rock island illinois 61264 United States
61279Perryton
Perryton rock island illinois 61279 United States
61275Port Byron
Port Byron rock island illinois 61275 United States
61278Rapids City
Rapids City rock island illinois 61278 United States
61279Reynolds
Reynolds rock island illinois 61279 United States
61204Rock Island
Rock Island rock island illinois 61204 United States
61299Rock Island Arsonal
Rock Island Arsonal rock island illinois 61299 United States
61282Silvis
Silvis rock island illinois 61282 United States
61244South Moline
South Moline rock island illinois 61244 United States
61284Taylor Ridge
Taylor Ridge rock island illinois 61284 United States
61244Watertown
Watertown rock island illinois 61244 United States
61244Whites Addition
Whites Addition rock island illinois 61244 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).
