I think NYC is likely to be an extreme outlier in this regard. A lot of people move there from all around the country (and outside it).

Intuitively, I'd agree. But I looked it up and NYC doesn't even rank in the top 10 cities by geographic diversity.

What's interesting is Colorado Springs ranks #2. I'm guessing that's because the Air Force Academy is there, which would make sense because it draws people from all over the country.

Rank. City / % Born in state / Geo diversity index

01. Las Vegas / 25.3% / 82.7

02. Colorado Springs / 33.8% / 80.1

03. Seattle / 38.1% / 79.3

04. Washington, D.C. / 36.2% / 78.8

05. Denver / 41.1% / 77.4

06. Portland / 39.1% / 77.3

07. Mesa / 38.8% / 77.2

08. Phoenix / 40.6% / 77.2

09. Virginia Beach / 39.8% / 77.0

10. San Francisco / 40.1% / 76.8

11. Charlotte / 41.3% / 76.4

12. Boston / 43.7% / 76.1

13. San Diego / 45.5% / 74.8

14. Tucson / 45.8% / 74.2

15. Raleigh / 47.2% / 72.5

16. Oakland / 48.2% / 72.1

17. Los Angeles / 45.6% / 71.8

18. New York / 48.4% / 71.1

19. San Jose / 47.3% / 69.8

20. Jacksonville / 50.6% / 69.8

21. Nashville / 51.8% / 68.8

22. Austin / 53.3% / 68.3

23. Minneapolis / 51.9% / 68.0

24. Atlanta / 51.3% / 67.7

25. Houston / 51.9% / 67.7

26. Albuquerque / 53.4% / 67.6

27. Tulsa / 54.5% / 66.2

28. Dallas / 55.0% / 64.9

29. Kansas City / 54.4% / 64.8

30. Oklahoma City / 56.8% / 64.3

31. Fort Worth / 57.5% / 63.8

32. Long Beach / 56.9% / 63.6

33. Chicago / 59.5% / 61.9

34. Sacramento / 59.5% / 61.9

35. El Paso / 61.9% / 61.9

36. Miami / 29.8% / 61.2

37. Omaha / 59.3% / 61.1

38. Wichita / 63.7% / 57.0

39. Columbus / 64.5% / 56.5

40. San Antonio / 65.5% / 54.9

41. Milwaukee / 65.7% / 54.5

42. Fresno / 66.2% / 53.6

43. Indianapolis / 66.5% / 53.6

44. Memphis / 65.9% / 52.8

45. Philadelphia / 67.9% / 52.3

46. Baltimore / 67.6% / 52.1

47. Louisville / 70.4% / 48.8

48. New Orleans / 70.9% / 47.8

49. Cleveland / 73.1% / 45.0

50. Detroit / 74.5% / 42.4

Source: scraped from https://www.seattletimes.com/seattle-news/data/seattle-ranks... (from 2016, but probably still about the same)