Searched: Copious use of Google Earth and Google Maps; Perry-Castaneda map library via UT Austin; Lonely Planet Guidebook section for Strasbourg and Alsace; Lonely Planet board searched "Strasbourg"; googled "maps", "Strasbourg", "bad/rough/dangerous areas"; Wikitravel. Also looked at what crime reports were available, without much enlightenment. Haven't checked to see if there's a "crime" section in the local paper, but my French probably isn't up to the challenge.
Question: I've turned up some anecdotal evidence that Hautepierre is a rough area now; Wikitravel also indicates that areas to the south and west of the main city are depressed areas, but this last is rather vague. (Elsau? Further out?)
Personal experience suggests that the area around a university is always seedier, but that doesn't seem to be the case in Strasbourg--at least according to Street View.
Via Google Earth, I did turn up signs of graffiti and abandoned lots and warehouses near the port, along the east bank of the city. Still, I could use some more concrete information.
So--where are the rough areas in the cities of Strasbourg and Kehl? I understand that "rough" is relative, here. Nonetheless, there must be somewhere in the city that isn't safe at night!
Bonus Question: What about ethnic neighborhoods? I'm told the area around the Synagogue has a concentration of Jewish businesses and services; I've also seen Neuhof and Neudorf typed as "historically ethnic," though bless me if I can find the source now.
Thank you all in advance for any help you can provide!