. Portions of the 15226 zip code are contained within or border the city limits of Pittsburgh, PA, Mount Lebanon, PA, and Dormont, PA. The 15226 area code is 412. 15226 can be classified socioeconically as a Lower Middle Class class zipcode in comparison to other zipcodes in Pennsylvania.ip Code 15226 Time Zone. 15226 is located in the state of Pennsylvania in the Pittsburgh metro area. Zip code 15226 is primarily located in Allegheny County. The official postal service name used for 15226 is PITTSBURGH, Pennsylvania.