From a total population of 20,669, West Mifflin has a median age of 45.5. The average age of males, in West Mifflin, is 42.1 while the average age of females is 48.5. When you compare this to median age of Pennsylvania, West Mifflin is 5.1 years older.
The median income of individuals, in West Mifflin, is $26,090 while the average household income is $47,894. When comparing the median income of people living in West Mifflin to the rest of Pennsylvania, the average income in West Mifflin is $2,822 less.