How many places in America are called Island Twentyone?

There is one place named Island Twentyone in America.

All places in the world called "Island Twentyone".

Location Island Twentyone:

• Washington

Cities

Riverside (46)
Centerville (43)
Fairview (40)
Midway (39)
Franklin (39)
Union (37)
Greenwood (37)
Glendale (36)
Salem (36)
Marion (36)
Lincoln (35)
Fairfield (35)
Pleasant Valley (35)
Georgetown (35)
Oakland (35)
Liberty (35)
Greenville (34)
Bethel (34)
Springfield (34)
Clinton (34)
Arlington (34)
Florence (34)
Clifton (33)
Milton (33)
Hamilton (33)
Newport (33)
Farmington (33)
Chester (33)
Kingston (33)
Lakeview (32)