More than a thousand fewer people applied for visitor visas in the fortnight following the Christchurch mosque attacks.
Immigration New Zealand received 28,375 applications for visitor visas in the first half of the month and 27,365 in the two weeks after 15 March, with 300 of those from relatives of the victims.
But the shootings also prompted interest from people considering emigrating to New Zealand.
The numbers of people making an initial expression of interest in New Zealand residence increased by 33 percent in the weeks following the shootings.
The largest increase was in people from America and Britain.
The overall visitor numbers for March will be published next month.