Okanogan County is a county located in North Central Washington that shares its border with Canada’s British Columbia province to the north east between Chelan Sand Wenatchee counties respectively to south west south east also it runs along few miles from Columbia River forming its south west border . Its county seat and largest city are both named Okanogan . Okanogan offers nature lovers an abundance outdoor experiences such as hunting , fishing , boating , camping , snowmobiling , cross-country skiing during winter months In addition there are two casinos offering gaming entertainment options . As per 2019 estimates its population was 42 750 people .