Arizona's 1st Legislative District is one of 30 in the state, consisting of most of Yavapai County, along with a small section of Maricopa County. As of 2021 there are 51 precincts in the district, 35 in Yavapai and 16 in Maricopa, with a total registered voter population of 176,958. The district has an overall population of 231,829.