As to U.S. cities, I would definitely rate Beaumont, Texas as having the best looking women.
The WORST? According to Clemenza, probably Seattle, WA. Typical woman there is a bony pasty-faced Leftist with purple hair, covered with tattoos and multiple piercings.
Cities with the most unattractive women: Buffalo, Detroit (and its suburbs), Seattle, and Portland. Outside the U.S., I would have to say much of southern Mexico, and the provincial cities in the U.K. I also never really found French women attractive, with the exception of their Acadian cousins in South Louisiana and Montreal.