Onalaska is a city located in Washington. Onalaska has a 2020 population of 544. Onalaska is currently declining at a rate of 0.00% annually and its population has decreased by -12.40% since the most recent census, which recorded a population of 621 in 2010. Onalaska reached it's highest population of 994 in 2014.
The average household income in Onalaska is $52,735 with a poverty rate of 0.00%. The median rental costs in recent years comes to $753 per month, and the median house value is $208,300. The median age in Onalaska is 39.9 years, 39.6 years for males, and 43.4 years for females. For every 100 females there are 92.2 males.