US United States Major Regions Postal Code Details
🏛️ Baltimore · Maryland
21227Arbutus
Arbutus baltimore maryland 21227 United States
21013Baldwin
Baldwin baltimore maryland 21013 United States
21250Baltimore
Baltimore baltimore maryland 21250 United States
21120Bentley Springs
Bentley Springs baltimore maryland 21120 United States
21020Boring
Boring baltimore maryland 21020 United States
21087Bradshaw
Bradshaw baltimore maryland 21087 United States
21022Brooklandville
Brooklandville baltimore maryland 21022 United States
21023Butler
Butler baltimore maryland 21023 United States
21228Catonsville
Catonsville baltimore maryland 21228 United States
21027Chase
Chase baltimore maryland 21027 United States
21030Cockeysville
Cockeysville baltimore maryland 21030 United States
21065Cockys Ht Vly
Cockys Ht Vly baltimore maryland 21065 United States
21222Dundalk
Dundalk baltimore maryland 21222 United States
21219Edgemere
Edgemere baltimore maryland 21219 United States
21221Essex
Essex baltimore maryland 21221 United States
21204Eudowood
Eudowood baltimore maryland 21204 United States
21051Fork
Fork baltimore maryland 21051 United States
21052Fort Howard
Fort Howard baltimore maryland 21052 United States
21155Fowbelsburg
Fowbelsburg baltimore maryland 21155 United States
21133Foxridge
Foxridge baltimore maryland 21133 United States
21053Freeland
Freeland baltimore maryland 21053 United States
21117Garrison
Garrison baltimore maryland 21117 United States
21057Glen Arm
Glen Arm baltimore maryland 21057 United States
21152Glencoe
Glencoe baltimore maryland 21152 United States
21071Glyndon
Glyndon baltimore maryland 21071 United States
21207Gwynn Oak
Gwynn Oak baltimore maryland 21207 United States
21227Halethorpe
Halethorpe baltimore maryland 21227 United States
21111Hereford
Hereford baltimore maryland 21111 United States
21065Hunt Valley
Hunt Valley baltimore maryland 21065 United States
21065Huntvalley
Huntvalley baltimore maryland 21065 United States
21082Hydes
Hydes baltimore maryland 21082 United States
21131Jacksonville
Jacksonville baltimore maryland 21131 United States
21087Kingsville
Kingsville baltimore maryland 21087 United States
21227Lansdowne
Lansdowne baltimore maryland 21227 United States
21286Loch Raven
Loch Raven baltimore maryland 21286 United States
21092Long Green
Long Green baltimore maryland 21092 United States
21093Lutherville
Lutherville baltimore maryland 21093 United States
21093Lutherville Timonium
Lutherville Timonium baltimore maryland 21093 United States
21105Maryland Line
Maryland Line baltimore maryland 21105 United States
21133McDonogh Run
McDonogh Run baltimore maryland 21133 United States
21220Middle River
Middle River baltimore maryland 21220 United States
21111Monkton
Monkton baltimore maryland 21111 United States
21236Nottingham
Nottingham baltimore maryland 21236 United States
21117Owings Mills
Owings Mills baltimore maryland 21117 United States
21120Parkton
Parkton baltimore maryland 21120 United States
21234Parkville
Parkville baltimore maryland 21234 United States
21065PDP Group Inc
PDP Group Inc baltimore maryland 21065 United States
21128Perry Hall
Perry Hall baltimore maryland 21128 United States
21131Phoenix
Phoenix baltimore maryland 21131 United States
21282Pikesville
Pikesville baltimore maryland 21282 United States
21133Randallstown
Randallstown baltimore maryland 21133 United States
21136Reisterstown
Reisterstown baltimore maryland 21136 United States
21139Riderwood
Riderwood baltimore maryland 21139 United States
21237Rosedale
Rosedale baltimore maryland 21237 United States
21204Ruxton
Ruxton baltimore maryland 21204 United States
21152Sparks
Sparks baltimore maryland 21152 United States
21152Sparks Glencoe
Sparks Glencoe baltimore maryland 21152 United States
21219Sparrows Point
Sparrows Point baltimore maryland 21219 United States
21153Stevenson
Stevenson baltimore maryland 21153 United States
21094Timonium
Timonium baltimore maryland 21094 United States
21252Towson
Towson baltimore maryland 21252 United States
21252Towson State University
Towson State University baltimore maryland 21252 United States
21250Univ Of MD Baltimore County
Univ of MD Baltimore County baltimore maryland 21250 United States
21156Upper Falls
Upper Falls baltimore maryland 21156 United States
21155Upperco
Upperco baltimore maryland 21155 United States
21162White Marsh
White Marsh baltimore maryland 21162 United States
21244Windsor Mill
Windsor Mill baltimore maryland 21244 United States
21207Woodlawn
Woodlawn baltimore maryland 21207 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).
