We consider a large family MJX-tex-caligraphicscriptF of torus bundles over the circle, and we use recent work of Li–Mak to construct, on each Y∈F, a Stein fillable contact structure ξY. We prove that (i) each Stein filling of (Y,ξY) has vanishing first Chern class and first Betti number, (ii) if Y∈F is elliptic, then all Stein fillings of (Y,ξY) are pairwise diffeomorphic and (iii) if Y∈F is parabolic or hyperbolic, then all Stein fillings of (Y,ξY) share the same Betti numbers and fall into finitely many diffeomorphism classes. Moreover, for infinitely many hyperbolic torus bundles Y∈F we exhibit non‐homotopy equivalent Stein fillings of (Y,ξY).