Choose a pattern or not: In some dining rooms the area rug serves as a floor covering that feels good underfoot and is meant for function and not décor. While other dining rooms keep a simple table and chairs, and then have the area rug take command of the room. If you choose the more bold approach, choose a few colors from the carpet and bring them into the wall color and fabrics of the room. This will unite the room and keep it from looking too busy for the eye.
Assess the size of your dining room: Your dining room size will dictate how large of an area rug you should use. Large dining rooms may need to utilize two or more area rugs based on multiple seating areas and tables. For smaller dining rooms consider using one that is larger than your dining room table, but smaller than the perimeter of the room. For those that have hardwood flooring, a border of the contrasting resilient flooring makes a nice contrast.