Perhaps it is because we are in North Florida and away from any large towns, but whatever reason we have very friendly and supportive neighbors. For example, the neighbor next to me is a retired doctor and he would check in often with an aged (even by my standards) widow down the street to make sure she was doing okay.
There are a few native Floridians, but most are from the Northeast, the Midwest, and the South (Georgia or the Carolinas) about equal in percentage.
If any one needs a ride into Jacksonville for medical reasons, any number of folks would volunteer. When our neighbors are at Costco, they call and see if we want anything.
We have run across a few people that seemed too concerned with themselves, but that is the exception.
About a third are snowbirds having a another house in Colorado or New Hampshire or the Carolina mountains for example. Many of us live here year round and actually enjoy the summer subtropical weather.
aurum
That being said, we have heard south Florida is a bit more as you indicate.
added: When we moved to this what was basically a retired community almost 30 years ago, most of the men were World War II vets and I can say without reservation those men regardless of wealth were the “salt of the earth”.