Is Katonah a good spot for a young couple looking to start a family?

My husband and I are from the New York/New Jersey area, but do not know much about Westchester. It looks as though Katonah might be a good spot for us, but I am concerned about the age demographics and that the school enrollment is declining. Maintaining the value of our property is important, but I want to make sure that we will be able to fit in as a young middle-class couple. Any information would be greatly appreciated!