Housing costs in the main centres have pushed people out and technology has allowed people to live and work here while staying connected to the metropolis.
There's also been a huge effort to attract people here and it would be hard to argue those efforts haven't contributed to that growth.
But that job is now done and that energy needs to go into adjusting.
This train isn't stopping. People are still moving here and there's pending refugee resettlement.
Whanganui will soon reach 46,000, if it hasn't already since the Census.
We could be headed to 50,000.
There are positives; More customers for businesses, a bigger market pull in services and events, and the vibrancy a larger population creates.
But there are as many downsides; People being priced out of housing, increased traffic and pressure on services.
Too much growth too quickly will kill what currently makes Whanganui attractive to new people and permanently change what has been a familiar home for many for a long time.
So, it was encouraging to hear both Whanganui's mayor and economic development head