A steering column device comprising: a tubular column jacket that supports a steering shaft so that the steering shaft is rotatable, the steering shaft having one end to which a steering member is attached; a tilt bracket that is fixed to a vehicle body, and has a first side plate and a second side plate, each of the first side plate and the second side plate having a vertically long hole; a telescopic bracket that is fixed to the column jacket, and has a third side plate and a fourth side plate that extend along the first side plate and the second side plate, respectively, each of the third side plate and the fourth side plate having a horizontally long hole; a lock mechanism that includes a fastening shaft inserted through the horizontally long holes and the vertically long holes, and achieves telescopic locking and tilt locking by pressing the first side plate and the second side plate onto the third side plate and the fourth side plate, respectively; a telescopic locking force increasing mechanism that includes a telescopic friction plate having a telescopic opening through which the fastening shaft is inserted, the telescopic friction plate being fixed to the third side plate of the telescopic bracket; and a tilt locking force increasing mechanism that includes a tilt friction plate having a tilt opening through which the fastening shaft is inserted, the tilt friction plate being fixed to the second side plate of the tilt bracket, characterized in that the telescopic friction plate and the tilt friction plate are provided separately from each other, one of the telescopic friction plate and the tilt friction plate being provided on a right side of the tilt bracket, and the other of the telescopic friction plate and the tilt friction plate being provided on a left side of the tilt bracket. a tubular column jacket that supports a steering shaft so that the steering shaft is rotatable, the steering shaft having one end to which a steering member is attached; a tilt bracket that is fixed to a vehicle body, and has a first side plate and a second side plate, each of the first side plate and the second side plate having a vertically long hole; a telescopic bracket that is fixed to the column jacket, and has a third side plate and a fourth side plate that extend along the first side plate and the second side plate, respectively, each of the third side plate and the fourth side plate having a horizontally long hole; a lock mechanism that includes a fastening shaft inserted through the horizontally long holes and the vertically long holes, and achieves telescopic locking and tilt locking by pressing the first side plate and the second side plate onto the third side plate and the fourth side plate, respectively; a telescopic locking force increasing mechanism that includes a telescopic friction plate having a telescopic opening through which the fastening shaft is inserted, the telescopic friction plate being fixed to the third side plate of the telescopic bracket; and a tilt locking force increasing mechanism that includes a tilt friction plate having a tilt opening through which the fastening shaft is inserted, the tilt friction plate being fixed to the second side plate of the tilt bracket, characterized in that the telescopic friction plate and the tilt friction plate are provided separately from each other, one of the telescopic friction plate and the tilt friction plate being provided on a right side of the tilt bracket, and the other of the telescopic friction plate and the tilt friction plate being provided on a left side of the tilt bracket.