Cosmopolis Real EstateCosmopolis is located in Washington. Cosmopolis, Washington has a population of 1,593. Cosmopolis is more family-centric than the surrounding county with 30.72% of the households containing married families with children. The county average for households married with children is 26.35%. The median household income in Cosmopolis, Washington is $60,000. The median household income for the surrounding county is $45,483 compared to the national median of $57,652. The median age of people living in Cosmopolis is 45.1 years. Cosmopolis WeatherThe average high temperature in July is 71.2 degrees, with an average low temperature in January of 32.5 degrees. The average rainfall is approximately 83.9 inches per year, with 0.7 inches of snow per year. Cosmopolis MapReal estate near CosmopolisNearby CitiesNearby Cities Homes for Sale |