Washington residents paid $4,146 to attend the four-year public institution this year $460 more than the $3,686 charged for 2016-17.
Non-residents paid 130.7 percent more than residents this year, or $9,564. Their price tag grew 5.9 percent from $9,030 in 2016-17.
About 97 percent of the school's undergraduate population are Washington residents. And about 1 percent are residents of other states.
Data shows 48 percent of full-time undergraduates who started school in 2015-16 received student financial aid in some form. In all, 434 students received grants or scholarships totaling $2.5 million and 192 students took out student loans totaling more than $1.09 million.
Including all undergraduates, 2,707 students used grants or scholarships totaling $15.44 million. Another 1,376 took out $8.39 million in federal student loans.