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About Columbia, Maryland
Columbia is a planned community in Howard County, Maryland, United States, consisting of 10 self-contained villages. With a population of 104,681 at the 2020 census, it is the second most populous community in Maryland after Baltimore. Columbia, located nearly halfway between Baltimore and Washington, D.C., is part of the Baltimore metropolitan area and is tracked by the United States Census Bureau as a census-designated place. Columbia proper consists only of territory governed by the Columbia Association, but larger areas are included under its name by the Census Bureau and the United States Postal Service. These include several other communities which predate Columbia, including Simpsonville, Atholton, and in the case of the Census, part of Clarksville.
What is my zipcode?
This tool will help you find out the ZIP code of your current location. Whether you are mailing a letter to a new address, getting acquainted with your new address, or visiting somewhere new, this site will help you learn everything about your current location and address. This tool will help you confirm your postal code in countries throughout the world.
ZIP Code Map
Our map of all zip codes in the United States is an amazing resource that has proven to be helpful to many people. By default the map is zoomed into your current location, or the target of your address search. From there you can see the boundaries of your ZIP code and of all the ZIP codes in your city, county, and state.
What are ZIP Codes?
The United States Post Office created the ZIP code system in 1963 to help the postal service track the delivery of mail. The system was originally only used for tracking the delivery of mail, but it has now been adapted to help people with addresses keep track of their shipments as well. The ZIP code system has now become an important part of everyday life in the United States. Most people in the United States have a ZIP code, even if they have never used it for anything.
The term ZIP is an acronym for Zone Improvement Plan. It was chosen to suggest that the mail travels more efficiently and quickly (zipping along) when senders use the code in the postal address.
ZIP Code Atlas
Our zipcode atlas has a list of cities in the United States to help you find the ZIP code of any location in the country, and also the postal code of any location in the world.