From a total population of 102,072, Cowlitz County has a median age of 40.7. The average age of males, in Cowlitz County, is 40 while the average age of females is 41.6. When you compare this to median age of Washington, Cowlitz County is 3.3 years older.
The median income of individuals, in Cowlitz County, is $24,042 while the average household income is $46,571. When comparing the median income of people living in Cowlitz County to the rest of Washington, the average income in Cowlitz County is $7,191 less.