Er bestaan 3 plaatsen met de naam Duncan Island in Amerika.
Alle plaatsen in de wereld die "Duncan Island" heten.
Riverside (46)
Centerville (43)
Fairview (40)
Franklin (39)
Midway (39)
Union (37)
Greenwood (37)
Glendale (36)
Marion (36)
Salem (36)
Pleasant Valley (35)
Oakland (35)
Fairfield (35)
Liberty (35)
Georgetown (35)
Lincoln (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)
Glenwood (32)