We let our neighbors know that the girls were coming (after checking to see that we were zoned for such things). I was expecting very negative reactions but got stories of how they, their grandparent, neighbors, friends, etc. had chickens and how much they enjoyed them. I will say that we do not have a rooster and disappointment for this lack has been expressed by most of my neighbors, but not all. They make regular trips over to visit the girls and laugh at them when they "run". A few of our neighbors think we are a little crazy to have the chickens, but as long as it does not affect them, they do not mind. They often comment on how they like hearing the chicken cackle, which is good because one of them walks around talking to herself all day.
We compost everything we can, including the litter from the henhouse. There is no real smell that last very long (depending on what we find in the back of fridge).
That is our experience. I will post more if something occurs to me.
Enjoy your chickens!