Where was A Small Town in Texas filmed?
1976 film by Jack Starrett
A Small Town in Texas (1976) was filmed in Lockhart and Wimberley, 2 places named in its Wikipedia article, in the United States. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.
Places per Wikipedia's article
The Wikipedia article names 2 places. Each links to the sentence that says so.
Also shot in these places
Waiting for GuffmanComedy film1997