Arizona's 9th legislative district is one of 30 in the state, consisting of a section of Maricopa County.

As of 2023, there are 39 precincts in the district, all in Maricopa, with a total registered voter population of 113,260.

[2] Following the 2020 United States redistricting cycle, the Arizona Independent Redistricting Commission (AIRC) redrew legislative district boundaries in Arizona.

According to the AIRC, the district is highly competitive politically.

[3] The district is represented in the 56th Arizona State Legislature, which convenes from January 1, 2023 to December 31, 2024, by Eva Burch (D-Mesa) in the Arizona Senate and by Lorena Austin (D-Mesa) and Seth Blattman (D-Mesa) in the Arizona House of Representatives.