Washington residents paid $3,613 to attend the four-year public institution this year $115 more than the $3,498 charged for 2016-17.
Non-residents paid 148.2 percent more than residents this year, or $8,966. Their price tag grew 1.4 percent from $8,841 in 2016-17.
About 97 percent of the school's undergraduate population are Washington residents. And about 3 percent are residents of other states.
Data shows 59 percent of full-time undergraduates who started school in 2015-16 received student financial aid in some form. In all, 362 students received grants or scholarships totaling $2.03 million and 144 students took out student loans totaling more than $661,946.
Including all undergraduates, 3,518 students used grants or scholarships totaling $20.04 million. Another 1,745 took out $9.89 million in federal student loans.