Cathlamet is a city located in Washington. With a 2020 population of 586, it is the 229th largest city in Washington and the 12642nd largest city in the United States. Cathlamet is currently growing at a rate of 1.21% annually and its population has increased by 10.15% since the most recent census, which recorded a population of 532 in 2010. Cathlamet reached it's highest population of 586 in 2021. Spanning over 1 miles, Cathlamet has a population density of 1,170 people per square mile.
The average household income in Cathlamet is $50,086 with a poverty rate of 19.06%. The median rental costs in recent years comes to $631 per month, and the median house value is $170,500. The median age in Cathlamet is 39.6 years, 42.9 years for males, and 39.4 years for females. For every 100 females there are 85.4 males.