Southwest PA ZIP Code
Southwest city is located in Pennsylvania State, Westmoreland County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Southwest PA zip code by its streets and block numbers if we have some of the Southwest streets loaded in our website
Southwest Area Code is 724 and Time Zone is Eastern (GMT -05:00).
Southwest Zip Code - Pennsylvania
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Southwest City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Southwest ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Southwest, Pennsylvania.
If you want to send a mail to Southwest City, you should use the 15685 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Southwest ZIP code system that it called ZIP+4, often called "plus-four codes", "add-on codes", or "add ons". A ZIP+4 code uses the basic 15685 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Southwest city block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in Pennsylvania.
Southwest, Pennsylvania - MAP
ZIP Plus 4 Southwest - US Streets Zip Codes
By pressing keys ctrol + F you can search Southwest zip codes by its streets, highways, and know the ZIP+4 US ZIP Code
Southwest ZIP Code Lookup
15685 Zip Code Information:
Zip Code: 15685,
Southwest Area Code: 724
Southwest, PA - Time Zone: Eastern (GMT -05:00)
City Alias: Southwest
State Abb: PA
Pennsylvania Zip+4 - Nearby Southwest Cities
Cities near Southwest in Pennsylvania