How to address to an unmarried woman and young man?
Could you tell me how to address to an unmarried woman - "Fräulein", and to a young man - "Junger Mann"?
Fräulein can be used (in a non-sexist way), if the really young lady you're talking to is under the age of (roughly) 14. Until that age, girls also get addressed as "Fräulein" on letters.
As for unmarried women, unlike English, there is so diffrence as in "Ms" and "Mrs".. as Thomas said: Frau X.
Certain regions will also accept "Meine (junge) Dame" (my lady) / "Mein Herr" (my mister), then without the last name added.