At some point in March, New Zealand welcomed its five millionth resident according to an estimate from Statistics New Zealand.
While there's no way of knowing for sure, it's likely the five millionth person arrived by plane, perhaps one of thousands of people returning home in the face of the Covid-19 pandemic.
It's been 17 years since the population topped 4 million in 2003 - making this the fastest million in our history.
Paul Spoonley is a sociologist at Massey University.
He speaks to Corin Dann.