Upvote:2
Yes, you need a visa. You should apply at the
Consulate General of the Republic of Korea
2033 Sixth Ave., #1125
Seattle, WA 98121
(206) 441-1011
They say it takes four days to process the application. See http://usa.mofa.go.kr/english/am/usa/visa/Visa/index.jsp for more information.