Onalaska is located in Washington. Onalaska, Washington has a population of 548. Onalaska is more family-centric than the surrounding county with 56.06% of the households containing married families with children. The county average for households married with children is 26.85%.
The median household income in Onalaska, Washington is $35,156. The median household income for the surrounding county is $60,581 compared to the national median of $69,021. The median age of people living in Onalaska is 35.7 years.
The average high temperature in July is 78.2 degrees, with an average low temperature in January of 33.4 degrees. The average rainfall is approximately 56.3 inches per year, with 4.1 inches of snow per year.