The trigger for this article was finding a twin for a town mentioned by Darryl Francis (in the sense that one, El Canbaro, was a permutation of the letters of the other, Barcelona, W03-277). I thought it might be amusing to see how many twin places existed, as it seemed to be as good as basis for town twinning as the reasons often given for these excuses for mayoral junketing. I was overwhelmed: more than one third (about three-quarters of a million) of all places participate in twins, but also nearly a quarter of a million exist in triplets, and so on.
"Twin Places and Other Top Anagrams,"
Word Ways: Vol. 37
, Article 7.
Available at: https://digitalcommons.butler.edu/wordways/vol37/iss3/7