The Valley had seven cities with less than a million, but more than 100,000 residents in the year 2000. These cities were: Chandler, Peoria, Tempe, Mesa, Scottsdale, Glendale and Gilbert. That same year, Phoenix boasted a population of over a million people.

Not all gated neighborhoods include resort-style recreational facilities. Most have a community pool and clubhouse but others may not. Some smaller developments offer no more than a playground for the kids or a natural open area where residents can walk their dog.