An electrostatic charge image developing toner includes toner particles including a particulate toner matrix and an external additive adhering to a surface of the particulate toner matrix. The particulate toner matrix includes a crystalline polyester resin. The external additive includes silica particles. The silica particles are secondary particles including primary particles having a diameter in the range of 30 to 90 nm. The secondary particles have an average circularity in the range of 0.25 to 0.50. The secondary particles have an average aspect ratio of 3.0 or more.