An exterior rearview mirror assembly configured for mounting at an exterior side portion of a vehicle includes a mounting portion, a mirror head and an electrically-operated actuator. The mounting portion is configured for attachment at an exterior side portion of a vehicle. The mirror head includes a mirror casing and a mirror reflective element. The mirror head is attached at the electrically-operated actuator. With the mounting portion of the exterior rearview mirror assembly attached at the exterior side portion of the vehicle, the electrically-operated actuator is electrically operable to move the mirror reflective element and the mirror casing together in tandem to vertically and horizontally adjust a field of view of a driver of the vehicle who is viewing the mirror reflective element.