Health of Houston (UT School of Public Health)
Healthy Neighborhood Initiatives (St. Luke's Episcopal Health Charities)
Includes 11 Community Health Reports.
Census Data for Texas (US Census Bureau)
From this page you can select a county or a city and retrieve quick information about race/ethnicity, persons under 5 and over 65, quick business facts, and basic geographical data.
CHARTing Health Information for Texas (University of Texas School of Public Health Library)
If you need to know health-related statistics, you should be able to find it here!