Maryland's Legislative District 9 is one of 47 districts in the state for the Maryland General Assembly.

[1] As of the 2020 United States census, the district had a population of 144,375, of whom 109,088 (75.6%) were of voting age.

The racial makeup of the district was 89,543 (62.0%) White, 10,757 (7.5%) African American, 287 (0.2%) Native American, 32,325 (22.4%) Asian, 47 (0.0%) Pacific Islander, 2,105 (1.5%) from some other race, and 9,338 (6.5%) from two or more races.

[2][3] Hispanic or Latino of any race were 6,067 (4.2%) of the population.

[5] The district is represented for the 2023–2027 legislative term in the State Senate by Katie Fry Hester (D) and in the House of Delegates by Chao Wu (D, District 9A), Natalie Ziegler (D, District 9A) and M. Courtney Watson (D, District 9B).