A toner container includes a cylindrical container body, having a first opening in a first end thereof and a notch in a circumferential surface thereof continuous with the first opening in the first end, a flange member to engage the first opening and the notch in the container body and having a toner outlet therein through which toner in the container body is discharged, a shutter member disposed on the outer circumferential surface of the container body, a conveyance member, rotatably installed inside the container body to convey the toner from a second end of the container body opposite the first end to the toner outlet in the flange member, and a recessed portion in the container body that projects inward into the interior of the toner container 5 mm or less from an inner surface of the container body.