1. Ulster province, Northern Ireland
2. Union Bridge, Carroll, Maryland, USA (2)
3. Union City, Alameda, California, USA
4. Union City, Clinton, Ohio, USA
5. Union City, Huntingdon, Pennsylvania, USA
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6. Union City, Monroe, West Virginia, USA
7. Union County, Illinois, USA
8. Union, Iowa, USA
9. Union, South Dakota, USA
10. Upper Paxton, Dauphin, Pennsylvania, USA
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11. Upper Township, Cape May, New Jersey, USA
12. Urbana, Champaign, Illinois, USA
13. USA
14. Utica, Macomb, Michigan, USA
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