We present herein a new out-of-plane MEMS actuator array. Previously, we developed out-of-plane MEMS actuators having a 180-μm stroke in the out-of-plane direction. However, the maximum output force, scale of integration and density of integration were limited to 0.087 mN, four actuators and 4 mm2/actuator, respectively. In the present paper, we propose a new calculation method by which to estimate the maximum output force and driving voltage according to conventional mechanics of materials. The improved shape of the actuator was derived using this method, and the maximum output force was increased up to 0.83 mN, which is approximately 10 times larger than that of the previous actuator. The scale and density of integration were improved via multilayer interconnection up to 100 actuators (25 times) and 1 mm2/actuator (a four-fold increase), respectively. In addition, we examined the driving behavior of the actuator array.