West Coast baby
I don’t understand how you’re gonna have a good sense of community when you share 1sq mile with millions of others in a large city. What percentage of people can you even engage in friendly banter with? The community we have in our modest sized town is so amazing, my wife and I talk about how grateful we are to live here.
Our kids can walk to a dozen different houses where they can play. We are close enough with all those families that we could drop the kids with any of them if we needed to. There are tons of parks and great recreational sports activities to be outside.
I do respect others who choose to live all crammed on top of each other. I love the culture that big cities offer. I just couldn’t live there, it’s too impersonal.
The community would be those who you see at the same café or whatever. Ideally places would have some kind of board or system for people to organize activities. These could be political or just something fun, like a board game night or other things.
As for the kid thing, in many cities the kids will commute to school or other places on their own. We’ve created a system where that’s unsafe in almost all locations in the US, but it isn’t required. We have a society of helicopter parents, partially out of necessity because kids can’t get anywhere on their own.