An adjustable outlet box assembly provides for attachment of an outlet box to a wall stud. The assembly includes an outlet box and a box bracket which is adjustably positioned to the outlet box. The box includes a flange which attaches to a linear set of teeth on the box bracket for resilient engagement with the side wall of the box. The bracket includes a stud attachment portion got engagement with the stud. The bracket is adjustably positioned on the box so that the box may be positioned with respect to the wall stud.