top of page
Mario graduated from the High School for Law Enforcement and Criminal Justice before attending Texas A&M University where he received his bachelor’s degree in Political Science and master’s degree in Public Health. He is a proud Aggie.
Mario has dedicated his career to serving others and will continue to do this as the District H Councilmember.
Mario started his career in public health, organizing communities to get people enrolled in health insurance through the Affordable Care Act. He then served as the District H Chief of Staff in 2016, learning exactly how local government works and seeing firsthand the challenges that face District H. Mario then joined the Houston Health Department, working to turn complex health data into valuable public health information for communities across the city. Currently, Mario serves as the Executive Director of Your Houston, a grassroots, nonprofit organization dedicated to improving the quality of life for all Houstonians.
Giving back to your community through service is a strong value Mario holds.
As a volunteer, he currently serves on the board of the MD Anderson YMCA along with the Houston Police Department Criminal Justice Advisory Board. Previously he has served on the Hardy/Near Northside TIRZ(Tax Increment Reinvestment Zone) board, leading the effort to expand the zone to three times its size to help remediate blight and address long-standing infrastructure problems in the area. He’s also served on the board of the Houston Land Bank, helping to facilitate two projects bringing vital single-family workforce housing to District H. Mario recently completed his service on the Houston LGBTQ+ Political Caucus Board where he served as Board Chair and Fundraising Chair. He was honored as the Larry Banagaris Leadership Team Member of the Year for 2022.
Mario Castillo is a proud native Houstonian who grew up in the heart of District H.
His family has deep ties to the community. His grandfather immigrated to the United States and started a small business, Castillo’s Realty, that he owned and operated for 47 years. Mario’s dad and sister both attended school at Holy Name Catholic Church, with his sister getting married there years later.