From a total population of 57,235, Diamond Bar has a median age of 41.1. The average age of males, in Diamond Bar, is 39 while the average age of females is 42.9. When you compare this to median age of California, Diamond Bar is 5.5 years older.
The median income of individuals, in Diamond Bar, is $34,539 while the average household income is $90,901. When comparing the median income of people living in Diamond Bar to the rest of California, the average income in Diamond Bar is $4,633 more.