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 98 percent of the school's undergraduate population are Washington residents. And about 2 percent are residents of other states.
Data shows 64 percent of full-time undergraduates who started school in 2015-16 received student financial aid in some form. In all, 659 students received grants or scholarships totaling $3.64 million and 294 students took out student loans totaling more than $1.48 million.
Including all undergraduates, 2,514 students used grants or scholarships totaling $13.71 million. Another 1,228 took out $6.79 million in federal student loans.