Net migration peaked at 72,400 in the July 2017 year, and the latest figures continue the recent trend of reducing annual net migration levels, the government agency said.
Chinese migration continued to be the largest on a net basis, with 9,300 of the 70,100 net arrivals coming from China, though that was down 9 per cent on a year earlier.
India was the second-largest source at a net 6,700, though Indian net migration was down 22 per cent from a year earlier, with a 10 per cent drop in annual student visas granted to Indian citizens to 5,800.
China continued to be the biggest source of migrants on residence visas, though that dipped 10.4 per cent to 3,050 in the year, while the total number of residence visas dropped 7.9 per cent to 15,400.
There was a 9.5 per cent increase in work visas granted in the year, to 46,500, while student visa numbers dropped 0.6 per cent to 24,100.
Short-term visitor arrivals, which include tourists, people visiting family and friends and people travelling for work, reached 3.7 million in the January year, up 5.5 per cent from a year earlier. The number of people coming to New Zealand on holiday rose 6.1 per cent on an annual basis to 1.95 million.