Greatschools.org Gives ratings and detailed information about schools & school districts.
DFW Info. This website will give you very detailed information and statistics (including information that is illegal for an agent to give you) from the 2000 census for the area around any address you enter. The information is available for the DFW Metroplex and surrounding counties at the neighborhood level, and at the zip code level for all of Texas.
Compare 2 Cities You select any 2 cities in the USA and get a comparison of various characteristics of interest of the cities, including Demographics, Income and Jobs, Ethnicity, Education, Climate, Crime Statistics, and Property Values.
US Census Bureau. To get information for anywhere in the USA instead of only Texas, you can use the Census Bureau.
Look up tax appraisal value; property tax amount; owner name; date of last transfer; square footage; lot size; structure dimensions; year built; subdivision name; and much more for just about any property in Texas.
DFW: Dallas Central Appraisal District
DFW: Collin County Appraisal District
DFW: Tarrant County Appraisal District
Link with links to all county tax appraisal districts in Texas