"The work being done to position Wanganui as a digital leader will hopefully create new business, which will have some higher salaries and wages."
The gap was probably affected by the higher portion of women who were homemakers or worked part-time, Ms Overton-Stuart said.
Union organiser Shanna Reeder of Unite said a variety of factors still fuelled the gender-related wage gap.
"People can get a little confused because if they're given a union collective contract that says they will earn a certain amount after doing a particular job for so many years, they think it means they will have equal pay," she said.
"Then they've got other problems that can keep their pay down, including the fact women don't get promoted as often as men."
Ms Reeder said women usually would not put their hands up for higher paying roles as often as men, and often took time off work for maternity leave.