As well as the food they bring donated goods, including blankets, socks, toiletries and even sanitary items for girls and women in need.
McPhee, 40, who works in mental health, said the numbers of those coming had grown from 90 in the first week, peaking at 200 from week three onwards.
It was no longer just families under the poverty line struggling.
"What's happening is we are getting a lot of working families. Their rentals are just killing them, plus the cost of living on top of that. Most families are coming up short."
The food drive, now in its tenth week, grew out of their charity, Feed a Family - through which the couple hoped to help educate and enable families to "eat well within the constraints of a budget".
In 2013 Jasmine McPhee, who runs a catering business, began posting advice and recipes to help big families on a tight budget.
It grew to become part of the charitable trust, which the couple bankroll with the support of extra donations from the community.
"It's a response to the need in the community," Vince McPhee said.
"We are so deeply concerned about what's happening out there."