I don't know how to identify them ahead of time, but there are definitely pockets that are densely populated with children, and I lucked into one. My kids have

I don't know how to identify them ahead of time, but there are definitely pockets that are densely populated with children, and I lucked into one. My kids have loads of neighborhood kids to play with. The place we moved from across town has no kids to speak of. I'd draw the same conclusion as you, if I still lived on the other side of town.