How to Look Up ZIP Codes Within the U.S.


Whether you’ve moved to a new location and need to know your ZIP code fast or you’re sending a gift or a letter to someone and don’t have have their ZIP code handy, finding this information is faster and easier than ever thanks to the Internet. There are several sources online that allow you to look up United State postal codes with whatever information you have available. Take a look at some of the best options along with how to use them.

Check with USPS

The first place to search is the United States Postal Service website. After all, this is its specialty. To find what you’re looking for, simply go to the “Look Up a ZIP Code” page and choose “Find by Address” or “Find by City and State.” You can also find a city name if you only have the ZIP code. Click on your selection and enter what information you do have, such as the recipient’s address or your current city and state, and a list of ZIP codes that match will come up on a results page. Unfortunately, if you’re looking in a large area and don’t have an exact address, you may receive dozens of results that aren’t very specific.

Try Free Map Tools

The website Free Map Tools also has a ZIP code finder tool, and it’s a bit easier to navigate. It provides you with a map of the United States, and you simply click on the area where you live or want to mail something to. Then, the site will provide you with the ZIP codes within a certain radius. You can set the radius with the search tools below the map, and you can zoom in on the map to narrow down your options.


At, not only can you find the ZIP code you’re looking for, but you can also learn just about everything else you need to know about the topic. Start with the interactive map that allows you to type in any part of the address you have, whether it’s the street address, city or county. The result is a map of that area along with the ZIP codes there and some other information, like which ZIP code is most populated, area codes, the time zone and map coordinates. The site has other tools, including a shipping calculator, ZIP code database, printable maps and other ways to narrow down your search.

Research on World Postal Code

World Postal Code is a great website for anyone who needs both domestic and international codes. On the homepage, you can search for a ZIP code by state or by using the interactive map. What’s unique about this map is that you can click on any location in the country, and it gives you the full address, including the ZIP code, along with the map coordinates. The further you zoom in, the easier it is to pinpoint your exact location. Along the right side of the website, you’ll see a list of other countries. For domestic postal codes and addresses, simply click on your country of choice. The site will bring up a map and other search options.

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