Register Log in Shopping cart (0)

USPS Zip Code Database Download Information about What ZipCodeDownload Can Offer You

We constantly monitor USPS data and release new data when every month. There are hundreds of changes to the data every month. Our confidence is so high that we offer a money back guarantee.

We have monthly, quarterly subscriptions or you can buy 1 month access to the current data. We let you decide when updates are significant enough to warrant the time and cost of updating. However, with monthly changes to the USPS data we recommend keeping your data fresh and accurate.

"USPS Zip Code Database Download". The ZIP code is a postal code system used by the United States Postal Service since 1963. The term ZIP is an acronym for Zone Improvement Plan; it was chosen to suggest that the mail travels more efficiently when senders use the code in the postal address. The basic format consists of five digits. An extended ZIP+4 code was introduced in 1983 which includes the four digits of the ZIP Code, followed by a hyphen and four additional digits that reference a more specific location. A ZIP+4 code uses the

"USPS Zip Code Database Download". To enable you to send and receive mail, the United States Postal Service (USPS) maintains ZIP codes. They help sort mail by destination as it moves through the USPS delivery system. The USPS website provides a free download of the ZIP+4 file, which includes the 5 digit ZIP code, 4 digit extension and place name. The ZIP code database is available in both a comma-separated values (CSV) and an XML format.

Do you have a complete list of the columns that are included?

Yes, we punish on each product page the Schema or fields available. An overview and samples of the data included in each edition of the zip code database are included on each product page.

Are your data sources reliable?

If you live in the United States, then you know the importance of having a ZIP Code. A ZIP Code is a must-have for many types of mail, including letters, flats and packages. USPS Zip Codes are assigned to specific locations across the country, and allow for efficient routing of mail. This article discusses how to obtain a free USPS ZIP Code database, which is updated every year by USPS.

Postal Zip Code Database. The zip code database is a very useful marketing tool for any company. The zip code database is a list of households, businesses, and other delivery points in the United States and its territories. When you use the zip code database, you have an opportunity to market to your target audience and improve your business.

Our data sources include the USPS, US Census Bureau, and the Internal Revenue Service (IRS) among others. We have been the largest partner with the USPS for over 20 years. We also provide a multitude of statistics that are derived from our data sources that save our customers time and money deriving these statistics.

How do I match ZIP codes to cities or counties?

ZIP codes are designed to aid mail delivery - not to match conventional boundaries. ZIP codes can be entirely within, entirely outside of, or partially within a city or county. Over 100 ZIP codes even cross state lines. It's also a misconception that the "city" and ZIP you use to address an envelope denotes whether an address lies within city limits. That "city" is usually the name of the main post office in the area.

If you are addressing mail, use the primary city provided by USPS that is available in every edition of our ZIP code database.

Which population estimate should I use?

We suggest the actual population count from the census that occurs every 10 years in the US. Even when the population counts are older, the accuracy is unmatched. The point of the census is for exactly this purpose - to count the population. That being said, you can learn about the variety of ZIP code population estimates here.

Which latitude and longitude coordinates should I use?

The latitude coordinate listed is an exact north/south point (to 6 decimal places) on the globe of the centroid or middle of the ZIP Code.
The longitude coordinate listed is an exact east/west point (to 6 decimal places) on the globe of the centroid or middle of the ZIP Code.

How many ZIP codes are included?

All Zip codes are included and the count of zip codes changes every single month. Most of our competitors publish old data that is inaccurate and out of date. Our data is the latest data from the USPS.

Do you offer other countries, ZIP+4, or mapping data?

We do offer Canada postal code data. US military ZIP codes that are serviced by USPS are included.
We do offer ZIP+4 data. We also have a Multi County Database by Zip Code.

How can I access my order?

Create an account on our website as part of the purchasing process and you will have immediate access to your account and you're data. We also have a Zip Code API you can use.

About Redistribution

You may make unlimited copies as long as each copy you make is for internal company use only. For example, you are allowed to make copies for backups as long as those backups are not publicly available. You may also make copies for each workstation for each employee. You may not make the data set publicly available for download over the internet or distribute the complete data set as part of an application provided to customers. However, you may use on public networks such as the internet if used within a lookup application such as a "nearest store lookup" where the data set is not distributed to end users.

Do you have a Free Zip Code Database Lookup?

Yes, we have a Free Zip Code Database Lookup. We encourage you to test our data and know it is the most accurate data anywhere. Our Free Zip Code Database 2021 and 2022 data.