The fine folks at the Housing Assistance Council released a report called “Taking Stock” a few months ago. Taking Stock, uses data from the 2010 Census and American Community Survey (ACS) to describe the social, economic, and housing characteristics of rural Americans, and includes great maps of the data.
For example, above is the Texas portion of the map of the geography of plumbing shortcomings in the nation’s housing stock
In addition to many national maps covering Texas, the report contains a sidebar on Zavala County, Texas. (The 33rd poorest county in the U.S)