There are more than 28,000 assisted living residences in the U.S., housing more than one million people, according to the National Center for Assisted Living (NCAL). The "typical" assisted living resident is an 83-year-old woman and the average age of all assisted living residents is 83. The average male/female ratio in assisted living residences is 74% women and 26% men. According to NCAL, the average size of an assisted living residence is 43 units and ranges from three units to 200 units. The average number of residents in a facility is 40, with a range of one to 175.