South Dunedin Business Association chairman Craig Waterhouse, who also helped organise the petition, said it had 3805 signatures on paper and 369 online.
The fact 10 times as many people had signed the paper petition reflected the ``lack of internet connectivity'' in South Dunedin, the upshot being Kiwibank customers in the community would be unable to use internet banking if their branch closed, Mr Waterhouse said.
He said three Australian-owned banks remained in South Dunedin and he expected many Kiwibank customers in the area would make the switch if the combined branch closed.
Ms Curran said she would be tabling the petition at Parliament before meeting Kiwibank representatives later this month to express her opposition to their planned branch closures.
Last month, Kiwibank and New Zealand Post announced plans to close four joint branches in Dunedin - Moray Pl, Dunedin North, Mosgiel and South Dunedin.
NZ Post said it would be seeking ``partner businesses'' to take over postal services in the affected areas. Kiwibank plans to open a stand-alone branch in central Dunedin.
It was understood postal services would continue as usual until partner businesses were secured.
