A vertically adjustable wall hanger device comprising a hanger and a hanger mount. The hanger comprises a main hanger body, a first set of serrations positioned in side-to-side spaced relation to one another on a back side of the main hanger body, and a center slot on the main hanger body and a hanging hook provided on the main hanger body. The hanger mount comprises a main mount body having a second set of serrations on a body face positioned in side-to-side spaced relation and sized and shaped similar and confronting the first set of serrations. The second set of serrations is located on a back side of the main hanger mount body with the hanger mount body having a screw hole confronting the center slot on the main hanger body. A center hanger mount is held in the main mount body positioned in co-axial alignment with the center slot provided in the main hanger body. The hanger and the hanger mount are assembled together by meshing the serrations in the first and second sets of serrations in a pre-selected position to accommodate users' positioning requirements, and a mounting screw extends through the hanger body and the center hanger mount in clamped abutting assembly together to hold the hanger and the hanger mount in superimposed lapped engagement together in the pre-selected position.