ZIP Code 15123 – West Mifflin, Pennsylvania | ZipsCode.us
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ZIP Code 15123
West Mifflin, Pennsylvania · Allegheny
ZIP code 15123 belongs to the city of West Mifflin in Pennsylvania (Allegheny). See all Pennsylvania ZIP Codes.
ZIP code 15123 belongs to West Mifflin, Pennsylvania, in Allegheny. If you are mailing a letter or package to this area, use West Mifflin, PA 15123 in the address. On this page you will find the city and county for 15123, nearby ZIP codes in the same county, and free tools to look up any address in this ZIP code.
What City Is ZIP Code 15123?
The city for ZIP code 15123 is West Mifflin, Pennsylvania. When you write an address in this area, the correct format is: Name, Street Address, West Mifflin, PA 15123.
ZIP Code 15123 County and State
ZIP code 15123 is located in Allegheny, Pennsylvania. For a complete list of cities and ZIP codes across the state, see the Pennsylvania ZIP Codes page.
Nearby ZIP Codes in Allegheny
These ZIP codes are in the same county as 15123:
ZIP Code 15123 on the Map
The map below shows the approximate center of ZIP code 15123, near West Mifflin, Pennsylvania. You can zoom in and drag the map to explore the area.
Map center is approximate (ZIP area center, around 40.4344, -80.0248). Map data © OpenStreetMap.
Population and Demographics of ZIP Code 15123
According to public U.S. Census Bureau data, ZIP code 15123 is home to a community in Pennsylvania. The figures below come from the U.S. Census and the American Community Survey (ACS).
Source: U.S. Census Bureau, American Community Survey (ACS) 2023 5-year estimates and 2023 Gazetteer. Figures are estimates and change with each new survey.
Find an Address in ZIP Code 15123
Need the full ZIP+4 code for a specific street address in West Mifflin? Use the free ZIP+4 Lookup tool, or find any ZIP code from a street address with the ZIP Code by Address tool.
Frequently Asked Questions
What city is ZIP code 15123?
ZIP code 15123 is for West Mifflin, Pennsylvania.
What county is ZIP code 15123 in?
ZIP code 15123 is in Allegheny, Pennsylvania.
What state is ZIP code 15123 in?
ZIP code 15123 is in Pennsylvania (PA).
How do I find the ZIP+4 for an address in 15123?
Use the free ZIP+4 Lookup tool with the full street address to get the complete 9-digit ZIP code.
What are the nearby ZIP codes to 15123?
Nearby ZIP codes include 15006 (Bairdford), 15007 (Bakerstown), 15014 (Brackenridge), 15015 (Bradfordwoods), 15017 (Bridgeville).
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