KOIN-TV is the CBS affiliate in Portland, Oregon. The station is owned by Nexstar Inc. Broadcasting in Portland since 1953, K ... OIN-TV broadcasts more than 9 hours of local news every weekday and 3.5 hours on weekends, along with its sister station KRCW - Portland's CW. Follow KOIN-TV online at www.koin.com, as well as on Facebook and Twitter. read more