Extended zip codes

A more detailed mailing code consisting of the original 5 zip code digit followed by a hyphen and four additional digits. These digits identify a specific geographic segment in delivery area. For the exact county you live in please share your location. You can also find the county by searching an address or by clicking on the map. The county borders are displayed on the map. In contrast, the largest zip code is with a huge area of 13, sq.

The average land area of a zip code is around 90 square miles, which is similar to the size of Knoxville, Tennessee. They are 5 digits long , but if you are referring to a more specific area, can be 9 digits long. ZIP codes do not necessarily depend on state or county boundaries. ZIP codes can include addresses from multiple cities, or even states. The U. Postcodes are used instead. Postcodes might seem a little complex but they are way better than Zip codes.

The first 2 characters of a postcode are letters and denote the region or city. ZIP codes don't usually cross state lines, but some do , , and are good examples. The edges of the boundaries commonly overlap. For the purposes of our free zip code database by county downloads, we will commonly list either the most common region for the ZIP code or list multiple regions if several exist in the ZIP code.

For cities, the assignment is somewhat more complicated. The assignment of cities to ZIP codes is more general.

The city is usually the name of the main post office. For instance, almost all ZIP codes in St. Louis County in Missouri have a city of Saint Louis when they may be more accurately described as the name of a smaller city where they are located. Click here to learn more about matching ZIPs to cities and counties. Toggle navigation. Search by ZIP, address, city, or county:. Featured In.

Remote and especially rural areas of the country do not have enough deliverable addresses to create a mail route. ZIP Codes start with a zero 0 in the northeast and gradually get higher as you move west. ZIP Codes in the far west start with a nine 9. The last two digits represent a delivery segment, which might be one floor of an office building, a side of a street, specific departments in an office, or specific Post Office boxes.

Locate a Post Office anywhere in the United States. Before printing, it checks your database against the latest USPS address records to verify the existing information and add the missing details if necessary. Inkit also formats addresses based on the generally accepted standards to deliver direct mail within the shortest time seamlessly.

Hundreds of supported integrations make this tool particularly useful for cross-channel marketing. You get a chance to align direct mail with SMS notifications, emails, social media, online advertising, and other digital channels. For more information about Inkit, contact our sales team , and request the demo. APIs to autocomplete and verify customer addresses, deliver automated and personalized campaigns, and generate paperless documents at scale.

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