SpatialPoint Home |  Contact Us 
Home  |    Carrier Route FAQ  |    Contact Us

Carrier Route Software & Data FAQs


What is a Carrier Route?
A Carrier Route is a group of addresses that a mail carrier can deliver to in a single day. Carrier Routes are assigned codes by the United States Postal Service to aid in sorting and delivery of mail. The codes are nine digits: 5 numbers for the ZIP Code, one letter for the Carrier Route type and three numbers representing the Carrier Route number.

The letters stand for:
* B = post office box
* C = city delivery
* H = highway contract
* L = landmark areas
* R = rural route delivery
* V = void area (non-delivery)

What is the difference between ZIP Codes, ZIP+4 Codes and Carrier Routes?
Carrier Routes "roll up" into ZIP Codes. There are an average of 15 ZIP Codes per Carrier Route. The boundary lines of Carrier Route and ZIP Codes do not cross or intersect. There are many more ZIP+4s than Carrier Routes. ZIP+4s may represent, for instance, one side of a street.

Why Should I Target Direct Mail and Bulk Mail Efforts by Carrier Routes?

  1. When you perform "saturation mailing" to at least 90% of the addresses in a Carrier Route, you can save between 50-60% on your mailing costs.

  2. "Birds of a Feather Flock Together". By mailing to more people in any given neighborhood, you can reach more of your target market.

  3. By mailing to Carrier Routes rather than ZIP Codes, you can eliminate areas where you will not likely get a response.

  4. When you better target your audience, you can increase your response rate.

  5. Greater return on investment. Reduced mailing costs and higher response rates lead to greater ROI.

Who uses Carrier Routes for Direct Marketing and Bulk Mailing?
Anyone or any company that buys or sells lists for direct marketing or public communication can benefit from using Carrier Routes. You can more accurately determine list size and have more targeted, effective lists.

What are Carrier Route Maps?
Carrier Route maps are maps that show the boundaries of Carrier Routes. Using Carrier Route maps lets you see where Carrier Routes are located in relation to your target market. CarrierRouteViewer lets you quickly create Carrier Route maps around any location in the U.S. Color-coded shading will help you visualize your target market and see at a glance the number of residences in a Carrier Route.

Can I get Carrier Route Maps through the USPS?
No. You need to go to a commercial vendor such as SpatialPoint and use our CarrierRouteViewer to create maps?

Why should I buy software to create my own Carrier Route maps? Why not just order maps from a service?
Using your own software such as CarrierRouteViewer allows you to quickly look a number of different possibilities for target areas and get quick counts of the number of address units in any area. Plus you can add features the the maps such as points-of-interest, ZIP Code boundaries and more. When you order maps from a mapping service you have to wait plus you may not get what you want and changes cost extra money. Having CarrierRouteViewer is like having an essential marketing and communication tool in your pocket.

What is the source of the Carrier Route data in CarrierRouteViewer?
TeleAtlas, one of the most respected sources for geographic, map and postal data in the the world, supplies a file called Dynamap®/Carrier Routes. It identifies the boundaries of USPS carrier routes nationwide, from the smallest walked by a city postal worker to the largest driven by a rural highway carrier. Dynamap/Carrier Routes reflects the latest USPS changes as well as nationwide street additions and changes.

Dynamap®/Carrier Routes is a cartographic representation of more than 300,000 United States Postal Service (USPS) Carrier Routes and ZIP Code areas. Primarily, these carrier routes are designated to residential areas. Changes, additions, and deletions from the most recent comprehensive Dynamap street network are used to create and update the boundaries.

This is a quarterly released product that primarily identifies the residential boundaries of postal carrier routes in the United States, ranging from the smallest walked route by a city postal worker to the largest driven route by a rural carrier. When this information is combined with Carrier Route level demographics and customers' own database, target markets can be easily and clearly defined, maximizing resources and minimizing costs.

In addition to the Carrier Route Boundaries, this product also comes with ZIP Code Boundaries and two tables of ZIP Code Centroids.


About SpatialPoint: Your MapPoint Experts

SpatialPoint focuses on Microsoft MapPoint technology platforms to help customers solve problems where location is critical and can provide competitive advantages.

CarrierRouteViewer is one of many applications we have developed that our customers use to increase revenues, decrease costs and gain a competitive advantage.

SpatialPoint has built a successful, customer-focused business. We stay on the leading edge of technological developments and nurture a strong positive relationship with Microsoft and other vendors. We are a responsive and nimble organization that insists on providing superior customer service and support. Visit the SpatialPoint home page to learn more.



Affordable, Easy to Use

Unlike some solutions, CarrierRouteViewer is priced according to your needs, with carrier route maps available by the State or entire U.S. Plus it's built on the Microsoft MapPoint platform, meaning it's easy to learn and use.

Accurate Data

Quarterly updates to postal Carrier Route maps and carrier route data are included with your purchase. You'll always have up-to-date data for your analysis.


Contact Us for Info


A Carrier Route is the region that one USPS mail carrier can deliver mail to in one day.

A Carrier Route Map shows the streets within each postal route area.

CarrierRouteViewer helps you target neighborhood sales and marketing efforts to control costs while achieving strong response rates.

Using CarrierRouteViewer, you will be able to spot high-density areas at a more precise level than ZIP Codes and achieve postal discount rates greater than available through ZIP+4 mailings.


  • Retail chains

  • Direct mail houses

  • Franchises

  • Small businesses

  • Telecommunications companies

  • Banks

  • Media/Print advertising

©copyright © 2005 SpatialPoint | all rights reserved