Alias and Base Street Names - Code-1_Plus - 5.0

CODE-1 Plus Reference for all Platforms

Product type
Software
Portfolio
Verify
Product family
Data Quality - Postals
Product
CODE-1 Plus
Version
5.0
Language
English
Product name
CODE-1 Plus
Title
CODE-1 Plus Reference for all Platforms
Copyright
2024
First publish date
1998
ft:lastEdition
2024-05-15
ft:lastPublication
2024-05-15T00:07:55.920704

It is possible for a single street to have more than one name. In such cases, the USPS differentiates between a base street name and one or more alias street names. Typically, either the alias or the base refers to only a portion of the street (for example, a particular house range or ranges). A base name is the preferred name for the entire street. Every street in the USPS database has one and only one base name. However, a base street can have multiple alias names. The USPS has identified three types of alias street names:

  • USPS preferred street name

  • Official street name change (as a result of a Chamber of Commerce Action)

  • Other

If the alias street name is preferred, CODE-1 Plus always stores the alias name instead of the base name. If the alias street name is an official street name change, CODE-1 Plus always stores the base name. However, if the alias street name is of type "other," CODE-1 Plus stores the alias or base, depending on the option you chose on the SA OUT parameter. Note that you never have the option of returning the alias street name if the input address matches the base street name. It is important to remember, however, that both the base street and the alias street are valid, deliverable addresses.

For example, in Bethesda, Maryland there is a street called Rockville Pike. Another valid name for Rockville Pike in Bethesda is Wisconsin Avenue. In this case, the USPS designated Rockville Pike as the base street name and Wisconsin as the alias street name.

The following example input addresses illustrate CODE-1 Plus returned output when processing alias and base street names (this example assumes that all alias street names are of type "other").

 

Input Address

Return Base Street if

Alias Street is Matched?

 

Output Address

9650 Wisconsin Avenue

Yes

9650 Rockville Pike

9650 Rockville Pike

Yes

9650 Rockville Pike

9650 Wisconsin Avenue

No

9650 Wisconsin Avenue

9650 Rockville Pike

No

9650 Rockville Pike