Complex sentence: There were two households out of which none have children under the age of eighteen living with them, one is a married couple living together, and one is an individual, none have someone living alone who is sixty five years of age or older.
Split into simpler sentences: There were two households out of which none have children under the age of eighteen living with them, one is a married couple living together, and one is a non-family. One household is made up of individuals and none have someone living alone who is sixty five years of age or older.