Some are not indexed. There are many libraries and genealogical societies in Texas. Many contain a wealth of information to assist with your research. Vital Records in Texas Texas began statewide registration of births and deaths in 1903. They are available from the Bureau of Vital Statistics in Austin.
Indexes are available to the public.
Marriage records have been forwarded to the Bureau of Vital Statistics since 1966. Prior to this time these records are available from the county clerk. Prior to 1836, only Catholic Churches could perform marriages. Divorces were filed at the Bureau of Vital Statistics in 1968. Records prior to this time, are located at the district clerk of each county.