Is there a rule or pattern to describe where someone comes from?

Some examples of places, with the word to describe people from that place:

  • New York / New Yorker
  • London / Londoner
  • Toronto / Torontonian
  • Paris / Parisian
  • Boston / Bostonian
  • Brazil / Brazilian
  • Mexico / Mexican
  • Vancouver / Vancouverite

There are -er suffixes, -ian suffixes, -an suffixes, and -ite suffixes. Possibly others that I could remember.

Is there a general rule for determining which suffix to use when you see the name of a place for the first time?



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