Is the 15229 ZIP code only West View?

No. While the entirety of West View is located within the 15229 ZIP code, the 15229 ZIP code also includes parts of Ross Township. Having the 15229 ZIP code in your address does not necessarily mean you are in West View. A map of the 15229 ZIP code can be found here: https://www.unitedstateszipcodes.org/15229.