If only it would slow down. Fast growing is not the same as having a good qulaity of life:
Maricopa County is located in the central part of Arizona. As of July 2006 its population was 3,768,123, which ranks fourth among the nation's counties and is greater than the population of 23 states.
The population explosion is evident in a 2007 Forbes Magazine study which ranked four of Maricopa County's municipalities in the top ten fastest-growing cities in the nation. (snip)
I grew up in AZ, hate to visit because it now feels so much like Mexico. Heritage is one thing, an army of invading illegals is altogether different.