Ms Hipango polled 15,376 votes, gradually pulling away from Labour candidate Steph Lewis on 13,535. Reg Skipworth finished third for New Zealand First with 2333 votes. The result is provisional with special votes still to be counted.
In the party vote, National took 15,474, Labour 12,085, and NZ First 3451.
"I have really enjoyed the campaigning and getting out and meeting people," Ms Hipango said.
"I didn't see it so much as a contest, as a job that needed to be done."
Another National winner on Saturday night was incumbent Rangitikei MP Ian McKelvie, who was pushing past the 16,000-vote mark with more than 90 per cent of the ballot complete.
Never likely to lose the safest of seats, he had more than double the vote of Labour's Heather Warren.