Banking giant NatWest has blamed falling usage levels for its decision to close its branches in Downham and Swaffham later this year.
The company announced on Wednesday afternoon that it would shut the premises on November 30 and December 7 respectively.
It says the number of transactions being completed at the sites has fallen by 28 per cent in Downham and 16 per cent in Swaffham since 2011.
However, the bank says an agreement has been reached with nearby Post Offices to enable customers to either withdraw or deposit funds or check their balances.
A mobile branch will also begin operating in the two towns after the closure.
A spokesman added: “We are committed to following the government protocol on branch closures, and we have made the decision following careful consideration of a wide range of factors, including branch usage and the alternative ways our customers can bank with us locally.
“Our customers are increasingly using alternative ways to bank with them such as online and mobile banking.”