From a total population of 6,478, Gridley has a median age of 33.5. The average age of males, in Gridley, is 29.4 while the average age of females is 36.5. When you compare this to median age of California, Gridley is 2.1 years younger.
The median income of individuals, in Gridley, is $16,870 while the average household income is $42,542. When comparing the median income of people living in Gridley to the rest of California, the average income in Gridley is $13,036 less.