I live in an area of the U.S. that is prone to subduction earthquakes; the coastline drops about twenty feet, the magnitude estimated is about 9+. They happen every, oh, 268 years or so. We are overdue.
Definitely not looking forward to the experience.
If you are talking about Cascadia, the average interval is 570 years or so, the minimum is 390.
Last big one was Jan 26, 1700.
It’s a very reasonable assumption to think we are pretty much totally safe until at least the minimum has passed which is another 80 years...