Maricopa County is one of the fastest growing counties in the country and has an estimated population of 4.3 million people, making it the fourth-most populous county in the United States. The governing body is the Maricopa County Board of Supervisors. The county is comprised of 27 towns and cities.
![](https://phoenixchamber.com/wp-content/uploads/2016/06/Maricopa-County-logo1.jpg)
301 W. Jefferson Street
Phoenix, AZ 85003
602.506.3011
Maricopa County Board of Supervisors
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