|A colleague passes on this remarkable visualization of crime rates in SanFrancisco seen as contours. At left is arrests for narcotics.|
I don't know why I haven't come across these state-by-state maps of popular baby names in the U.S. before.
Ethan is an interesting case. The U.S. map (left) shows Ethans spreading north up the Mississippi into the Midwest and also west into the prairie states.
Ethans top Canadian lists (according to
American Avas cluster in the Upper Midwest and Pennsylvania. I thought this might be a German/Scandinavian thing, (as in fact it may be) but Canadian Avas lead in Newfoundland and Nova Scotia.
In Quebec, Avas don't make a top 25 list.