ZIP Code - Wikipedia
The ZIP Code system (an acronym for Zone Improvement Plan[1]) is the system of postal codes used by the United States Postal Service (USPS). The term ZIP was chosen to suggest that the mail travels …
BALTIMORE, Maryland ZIP Codes
Use our address lookup or code list to find the correct 5-digit or 9-digit (ZIP+4) code for your postal mails destination.
Baltimore, MD ZIP Codes, Map and Demographics
5 days ago · ZIP Codes: Baltimore, MD has 60 ZIPs assigned to it by the U.S. Postal Service. This includes 39 Standard, 7 PO Box, and 14 Unique types. Usually, PO Boxes are located inside Post …
ZIP Code | Postal Addressing, Delivery, Formatting | Britannica
Oct 21, 2025 · ZIP Code, system of zone coding (postal coding) introduced by the U.S. Post Office Department (now the U.S. Postal Service) in 1963 to facilitate the sorting and delivery of mail.
Baltimore Maryland ZIP Codes - Map and Full List - Zipdatamaps
4 days ago · The ZIP Codes in Baltimore range from 21201 to 21298. Of the ZIP codes within or partially within Baltimore there are 23 Standard ZIP Codes, 13 Unique ZIP Codes and 4 PO Box ZIP Codes.
POST OFFICE ZIP CODES 21226 21206 Raspeburg 21207 Gwynn Oak 21208 Pikesville 21225 Brooklyn 21226 Curtis Bay 21227 Halethorpe
USPS - Find a ZIP Code
A ZIP Code is an essential part of the mailing process. We provide your business with several different ways to find a ZIP Code and understand it.
Baltimore, MD Zip Code Map (25 Zip Codes) – US Map Guide
Explore Baltimore, MD zip code map with detailed charts and insights into its population, demographics, household information, and more.
Baltimore Maryland Zip Code List - Baltimore Zip Code Map MD
There are 40 total unique zip codes in Baltimore, Maryland. The area code (s) for Baltimore is 443/410/667.
What is Zip Code and How Do Zip Codes Work? - PostGrid
What is ZIP Code and what makes the Postal Code system so special? ZIP Codes are the postal code system used in the US. Read more.