ZIP+4 with Latitude and Longitude

Geocoded 9 Digit ZIP Code Database

Starting with the latest USPS ZIP+4 database containing 45 million records, we attempt to match each ZIP+4 to its latitude and longitude coordinates. Our current exact match rate is 80% and growing. A record without an exact match is populated with the latitude and longitude of the ZIP Code center. In order to keep the file size to a minimum (currently ~100MB) we’ve combined ZIP+4 ranges that have the same latitude and longitude. This reduces the number of records to about 2.65 million.

This database is designed to provide a more refined latitude and longitude for address data. A ZIP+4 is used by the U.S. Postal Service to facilitate a more precise mail routing system. It is usually a segment of one side of a street and may include many addresses. For that reason, it is not suitable for pinpointing exact addresses but is significantly more granular than normal ZIP Code geocodes.
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ZIP+4 with Latitude & Longitude

The following demonstrates the file layout and example data. As mentioned in the summary, we reduce the overall file size by combining ZIP+4 ranges within the same latitude and longitude. For example, an address with the ZIP+4 of 12345-0800 would match to the first record shown below because 0800 is within the range of 0001-0999.

ZIPCode Beginning ZIP+4 Ending ZIP+4 Latitude Longitude
12345 0001 0999 24.123456 -89.456789
12345 1001 1500 24.123455 -89.456777
12345 1501 2500 24.123458 -89.456788
12345 2501 4500 24.123456 -89.456789
12345 4502 8800 24.123456 -89.456789
Learn more: View the Product Documentation / Watch our Accuracy Matters video

Database Sources

We are licensees of USPS database products, but we enhance our ZIP Code latitude and longitude database based on decades of experience to provide you with the most accurate product available.

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ZIP Code Database with Latitude and Longitude
ZIP Code Database without Latitude and Longitude