FBI spokeswoman Ayn Dietrich said the five have been charged in a federal criminal complaint and made an initial court appearance Thursday in Seattle. She says all five remain in custody.
Four are from Los Angeles and one from Tacoma. Authorities are looking for two others accused in the takeover-style robberies in September, October and December at branches in Lakewood, Seattle and Kirkland.
Robbers would enter the bank in a group, jump over counters and demand money from tellers. The group frequently traveled by bus to Los Angeles after a robbery.
The FBI says the group also may be responsible for 10 similar bank robberies in Michigan and one in Ohio.