A recent study looking at “cross-correlations of American baby names” revealed something very interesting.
Popular baby names in one state tend to be correlated with popular baby names in nearby states, and during most of the 20th century, the two main correlations were north and south.
But in the 1980s and 1990s, this long-standing pattern shifted.
Now, the two main correlations are roughly the coasts and the central states (especially the Northern Plains states).
The authors of the study didn’t include any theories about what might have caused the shift…do you guys have any guesses?
Sources: Cross-correlations of American baby names (abstract), How baby names vary state to state
Images: Screenshots from video “How baby names vary state to state” © P. Barucca, J. Rocchi, E. Marinari, G. Parisi, and F. Ricci-Tersenghi/PNAS