From a total population of 21,424, Colusa County has a median age of 34.1. The average age of males, in Colusa County, is 33.1 while the average age of females is 35.1. When you compare this to median age of California, Colusa County is 1.5 years younger.
The median income of individuals, in Colusa County, is $22,211 while the average household income is $50,503. When comparing the median income of people living in Colusa County to the rest of California, the average income in Colusa County is $7,695 less.