Bousbach has historically been attested as
Buezbach in 1429 and
Buschbach in 1525. Bousbach and its German counterpart are Germanic in origin, deriving from a High German dialect, ultimately from Proto-West-Germanic
*busk. The Germanic hydronym
*-bak(i) entered the French language via High German, and took on two forms: the Germanic form
-bach and Romantic
-bais. ==Population==