Haven’t yet read any of the other answers, will do so after posting.
Yes, we are pretty friendly with the folks in the 8 houses closest to us. My Dad is the fix-it guy, loaner of tools. So all the men-folk are always over in our garage talking to my Dad and getting advice or borrowing tools.
The fellow directly across the street is in the same industry from which Dad retired, so they like to talk shop. His wife loves to cook and so she and I trade recipes and often make food to bring over to each other. They also have a brand new baby that my parents love to visit with.
Most of my neighbors have pets, so I love to visit with all of them, and several of them we either walk or babysit.
We have 3 elderly neighbors for whom we either pick up their mail, take out the trash, occasionally drive them to errands and for whom we sometimes house sit.
My next door neighbor was in an industry for which he saved a lot of raw material from the manufacturing business that he had. My Dad loves to use this material to make repairs or to invent new tools.
3 of our neighbors have had water leakage problems, for which my Dad came to the rescue to turn off their water at the source and then alert them to the situation.
Our next door neighbor on the other side, an elderly lady who uses a walker, spent Thanksgiving with us. She regularly shops at the PX and picks up treats for us.
One of the neighbors across the street is really good with computers, so he’s helped us a few times with computer problems. He and my Dad also like to talk about mechanical stuff, house problems and HOA situations.
I’m the person who helps everybody get to know the newcomers. We had new neighbors move in over Thanksgiving, so I gave them a map of his immediate neighbors with their names and what kind of pets they had, so they could remember everybody more easily. Then I introduced them to the other immediate neighbors. I also gave them helpful hints about how to avoid problems with our HOA.
I made cookies and candy for most of these folks over Christmas.
2 of our neighbors we occasionally go out to lunch with.
Up and around the other end of our street are some other neighbors, about 5 families, who have pets that regularly walk them around the block, so we know them pretty well too.
And we have keys to 2 neighbor’s houses.