Hay un lugar llamada Duff Knob en América.
Todos los lugares del mundo llamados "Duff Knob".
Riverside (46)
Centerville (43)
Fairview (40)
Franklin (39)
Midway (39)
Union (37)
Greenwood (37)
Glendale (36)
Marion (36)
Salem (36)
Oakland (35)
Fairfield (35)
Liberty (35)
Georgetown (35)
Lincoln (35)
Pleasant Valley (35)
Springfield (34)
Greenville (34)
Bethel (34)
Clinton (34)
Arlington (34)
Florence (34)
Newport (33)
Farmington (33)
Chester (33)
Hamilton (33)
Kingston (33)
Clifton (33)
Milton (33)
Lakeside (32)