The five supervisors[1] are each elected from single-member districts to serve four-year terms.

[3] The Board usually meets two Wednesdays every month in the Supervisor's Auditorium at the Maricopa County Complex in Phoenix, Arizona.

Members of the public are invited to attend these meetings.

As of January 2025[update], Thomas Galvin is the board's chairman.

The county is named after the Maricopa Indians, who were known to have inhabited the area as early as 1775.