First Natwest branch to close in one weekpublished at 12:57 Greenwich Mean Time 1 December 2017
The first to close in Cornwall - Wadebridge - will shut its doors on Friday 8 December. Other branches will close between December 2017 and June 2018.
RBS has published figures which show transactions over the counter have fallen.
The lowest figure in Cornwall is for Wadebridge where bosses say just 36 customers "do business face-to-face every week". The highest is 68 transactions at the Newquay and Helston branches each week.
Natwest says it's "proactively communicating with customers affected by the closures" and will be contacting vulnerable customers and regular branch users.
A mobile branch will be in Wadebridge for 12 weeks because of the short notice of the closure.