Washington residents paid $3,460 to attend the four-year public institution this year $67 more than the $3,393 charged for 2016-17.
Non-residents paid 154.7 percent more than residents this year, or $8,813. Their price tag grew 0.9 percent from $8,738 in 2016-17.
About 95 percent of the school's undergraduate population are Washington residents. And about 5 percent are residents of other states.
Data shows 71 percent of full-time undergraduates who started school in 2015-16 received student financial aid in some form. In all, 638 students received grants or scholarships totaling $4.01 million and 324 students took out student loans totaling more than $1.83 million.
Including all undergraduates, 3,695 students used grants or scholarships totaling $22.52 million. Another 2,185 took out $13.49 million in federal student loans.