Cowlitz County is a county located in the state of Washington. As of 2000, the population is 92,948. The county seat is at Kelso. Its name derives from a Cowlitz word meaning "seeker (in the spiritual sense)."
According to the U.S. Census Bureau, the county has a total area of 3,021 km˛ (1,166 mi˛). 2,949 km˛ (1,139 mi˛) of it is land and 72 km˛ (28 mi˛) of it is water. The total area is 2.37% water.
As of the census2 of 2000, there are 92,948 people, 35,850 households, and 25,059 families residing in the county. The population density is 32/km˛ (82/mi˛). There are 38,624 housing units at an average density of 13/km˛ (34/mi˛). The racial makeup of the county is 91.80% White, 0.52% Black or African American, 1.52% Native American, 1.30% Asian, 0.13% Pacific Islander, 2.11% from other races, and 2.62% from two or more races. 4.55% of the population are Hispanic or Latino of any race.
There are 35,850 households out of which 32.80% have children under the age of 18 living with them, 54.60% are married couples living together, 10.70% have a female householder with no husband present, and 30.10% are non-families. 24.30% of all households are made up of individuals and 9.70% have someone living alone who is 65 years of age or older. The average household size is 2.55 and the average family size is 3.01.
In the county, the population is spread out with 26.80% under the age of 18, 8.30% from 18 to 24, 27.50% from 25 to 44, 24.10% from 45 to 64, and 13.30% who are 65 years of age or older. The median age is 37 years. For every 100 females there are 98.20 males. For every 100 females age 18 and over, there are 95.80 males.
The median income for a household in the county is $39,797, and the median income for a family is $46,532. Males have a median income of $40,378 versus $25,710 for females. The per capita income for the county is $18,583. 14.00% of the population and 10.30% of families are below the poverty line. Out of the total population, 19.50% of those under the age of 18 and 6.60% of those 65 and older are living below the poverty line.
Cities and towns
A census-designated place called West Side Highway is also located in the county.