Carrier Route Polygon Files

This is the best file in the marketplace and a must for target marketers due to sheer accuracy. We split Census Blocks to create boundaries that best reflect the true geography covered by individual mail carriers!

And – we can custom build a customer database to our Carrier Routes!


Sammamish Data Systems Inc. has created extremely accurate, up-to-date and detailed postal carrier route boundaries. This new polygon file combines the latest information from the current TIGER/Line™ files, the Postal Service's latest AMS II files, the Geological Survey, and proprietary data.

A unique feature of our carrier route polygons is that each ZIP + 4 location is offset from the street approximately 30 feet to provide additional realism to their locations. This subtle enhancement of our file gives you a perfect tool for completing a very detailed mailing of any area.

This extremely accurate and detailed file is ready for use with most desktop mapping systems, including GeoSight, MapInfo, and ArcInfo/ArcView.

Our Carrier Route Centroid file includes:

Geography Levels

Available by State, Region, or the entire U.S.

Update Schedule

Available with Monthly, Quarterly, or Semi-Annual updates - remember we can create the most current, custom .pdf or hard copy maps for you!

For pricing, detailed file layouts, or questions, contact us