In 2018, Cowlitz County, WA had a population of 105k people with a median age of 41.5 and a median household income of $51,752. Between 2017 and 2018 the population of Cowlitz County, WA grew from 103,590 to 105,112, a 1.47% increase and its median household income grew from $49,804 to $51,752, a 3.91% increase.
The 5 largest ethnic groups in Cowlitz County, WA are White (Non-Hispanic) (83.8%), White (Hispanic) (5.52%), Two+ (Non-Hispanic) (3.94%), Other (Hispanic) (1.45%), and Two+ (Hispanic) (1.24%). 0% of the households in Cowlitz County, WA speak a non-English language at home as their primary language, and 98% of the residents in Cowlitz County, WA are U.S. citizens.
In 2018, the median property value in Cowlitz County, WA was $197,000, and the homeownership rate was 66%. Most people in Cowlitz County, WA drove alone to work, and the average commute time was 23.8 minutes. The average car ownership in Cowlitz County, WA was 2 cars per household.