Book Towns: Forty Five Paradises of the Printed Word by Alex Johnson has been published by Frances Lincoln. Atlas Obscura brings a piece about it. The towns covered in the book are:

  1. Ascona, Switzerland
  2. Bécherel, Brittany, France
  3. Bellprat, Catalonia
  4. Borrby, Sweden
  5. Bowral, NSW, Australia
  6. Bredevoort, Netherlands
  7. Clunes, Victoria, Australia
  8. Cuisery, Burgundy, France
  9. Damme, Belgium
  10. Featherston, New Zealand
  11. Fjaerland, Norway
  12. Fontenoy-la-Joûte, Lorraine, France
  13. Gold Cities, Grass Valley, California
  14. Hay-on-Wye, Wales
  15. Hobart, New York
  16. La Charité-sur-Loire, Nièvre, France
  17. Langenberg & Katlenburg, Germany
  18. Lillehammer, Norway
  19. Montereggio, Italy
  20. Montmorillon, Aquitaine, France
  21. Montolieu, Aude, France
  22. Obidos, Portugal
  23. Paju, South Korea
  24. Redu, Belgium
  25. Richmond, South Africa
  26. St. Pierre-de-Clages, Switzerland
  27. Sedbergh, England
  28. Selfoss, Iceland
  29. Sidney, British Columbia, Canada
  30. Stillwater & Twin Cities, Minnesota
  31. Sysmä, Finland
  32. Torup, Denmark
  33. Tvedestrand, Norway
  34. Unrena, Spain
  35. Wigtown, Scotland
  36. Wünsdorf, Germany
  37. Bhilar, Maharashtra, India
  38. Buenos Aires, Argentina
  39. College Street, Kolkata, India
  40. Jimbocho, Tokyo, Japan

Not sure where the other five went, though there are a couple of double entries. There’s a International Book Towns website: one’s idea that there’d be one book town per nation seems to be wishful thinking. Willingness to pay the fee may be the main criterion!  Wikipedia has an overlapping listing. One way or another bibliophilic voyagers have their work cut out for them.

See also Book towns