We have friends who get calls from "concerned neighbors" because their child is a block away playing at a park with no adult supervision. Any wanker can call cps and make your life miserable, and the wealthier the area, the more cps tends to meddle. Montgomery county mentioned in the sibling comment is one of the most well-to-do counties in the country and also a place I would not ever consider raising a child in due to cps actions there.