"Yinzer" (or "Yunzer") was historically used to identify the typical blue-collar people from the Pittsburgh region who often spoke with a heavy Pittsburghese accent.
The term stems from the word yinz (or yunz), a second-person plural pronoun brought to the area by early Scottish-Irish immigrants.
[1] Over time, yinzer has been used by many Pittsburgh residents to self-identify, even if they don't speak with a thick accent.
The concept and use of the word gained popularity in the 21st century as the area's population loss slowed, and the city became a hub for revitalization.
As the city gained note as a desirable place to live,[2][3] more outsiders have moved or returned to the Pittsburgh metropolitan area.