I read a number of books by the same author about human children raised by androids or human like robots because there were no adult humans
Edit - The androids acted like they were the actual parents of the children until some flaw/accident exposed them as not really humans. In one I think the parent fell off a building to reveal electronics but take it with a grain of salt. Then the truth was revealed to the group of kids, that they were the only real human beings and the androids were trying their best to replicate a normal human upbringing.
I got them from the local library late 60's early 70's. As I recall they were towards the end of the alphabet as I can visualize getting them out of the back wall of the library which would be P's on to Z's if that helps!