The Texas Chain Saw Massacre filmed at Bilbo's Texas Landmark, Bastrop. The gas station scenes were filmed at this roadside station, which has since closed and may be restored.

Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer.
Planning the trip? The United States travel atlas covers money, language and getting aroundand everything filmed in Bastrop is on one page
Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in Bastrop and it tells you what was shot around you, how to get there, and whether you can actually go in.
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