10 Most Honest Cities in 'Wallet Test'

Reader's Digest put a name with a cellphone number, a family photo, coupons, and business cards, plus the equivalent of $50, and "dropped" 12 wallets in each 16 selected cities - in parks, near shopping malls, and on sidewalks.

Population figures are inside city limits, suburbs not included, source Wikipedia;

Region is a hint: EU North means EU location north of Germany, EU South means location south of the Alps, etc...