NatWest has announced it intends to close its Corsham branch.
The bank has confirmed the Pickwick Road branch, which it says has only 45 regular customers a week, will close on July 25.
Customers will be able to check balances and pay bills from the Post Office on the High Street, and the branch’s free ATM will remain in place.
In a statement spokesman Sarah Binnie said: “The number of customers using this branch has dropped by 25 per cent over the last few years as more and more of them use alternative ways of banking with us.
"This includes by telephone, in Post Offices, by app and online.
"There are only 45 customers who regularly use the branch each week.
“Over our whole branch network there has been a 30 per cent drop in branch transactions since 2010 as people do their banking when and where it is convenient for them.
“Eighty per cent of our customers are within a three mile radius of a branch, and when you include the Post Office network that rises to 90 per cent of our customers being within one mile of a place where they can carry out their everyday banking.
“We’ve advised staff and we’re writing to our customers to make them aware of the closure and the different ways they can still bank with us.
“If customers are concerned about how this will impact their banking, they can go into the branch where staff will be happy to discuss the alternative options available.”
The nearest alternative NatWest branch to the town is just under four miles away in Chippenham.
Lloyds Bank and HSBC will now be the only banks to have a presence in the town, following the closure of Barclays.