About Sammamish Data Systems Inc

Sammamish Data Systems began in 1979, and we pride ourselves in providing highly accurate postal geography boundaries (Carrier Route, ZIP+2, and ZIP Code Polygons) and centroid products (ZIP+4 and Carrier Route) as well as street files, to facilitate detailed analysis in a variety of mapping applications.

Sammamish Data’s own desktop mapping software, GeoSight, is highly regarded in the industry. Our geography files are also ready to use with other GIS systems, including MapInfo and ArcInfo/ArcView.

We also provide an array of custom products and create custom maps, including printed and .PDF maps, to fit your business’ needs. Whether you are a small business needing just a map or two, or a larger business with a GIS department, Sammamish Data Systems has the right product for you.

Please click on the links to view specific products, find detailed overviews, and check out sample images.

If you don't see what you need here, Contact Us, and we'll be here to help. Should you need something beyond our scope of applications or expertise, we’ll be happy to provide referrals for you and get you pointed in the right direction.

We look forward to working with you!