Sallie Alcorn — City Council District H

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Mario Castillo represents District H on Houston City Council, making decisions about city services, budgets, and development that directly affect neighborhoods from the Near Northside to other District H communities. His family has deep roots here — his grandfather ran a local real estate business for 47 years in the same area Castillo now serves. Castillo studied political science and public health at Texas A&M University. He started his career helping families sign up for health insurance through the Affordable Care Act. He then worked as Chief of Staff for District H, learning how city government operates from the inside. Before becoming council member, Castillo worked at the Houston Health Department, where he translated complex health data into information regular people could understand and use. He also led Your Houston, a nonprofit focused on improving quality of life across the city. On City Council, Castillo votes on the city budget, approves development projects, and sets policies for services like trash pickup, street repair, and public safety. He serves on committees that shape how tax dollars get spent in District H and citywide. His background in public health and community organizing influences how he approaches housing, infrastructure, and neighborhood development issues. District H residents can contact Castillo's office at 832.393.3003 or districth@houstontx.gov with concerns about city services or to request help with issues like potholes, flooding, or zoning problems. His office is located at 900 Bagby Street in City Hall Annex.