I'd start with googling best places to raise a family and start digging in. I'm sure the lists change from year to year. I recently moved and started this way.

Also, there is no utopia so the "best place to raise a family" in the US might have other negatives, you just need to prioritize.

A low-traffic (no through-traffic) suburban area with a park or parks within easy walking distance and bike paths. I can think of lots of areas like that around here (northern California) and I'm sure elsewhere.

We live in such a neighborhood and it has been excellent for kids. They can walk or bike to the park in less than a minute, there are multiple playgrounds and large fields to run around.