I'm 5'6, and while I don't think that's tall, plenty of people tell me I'm tall. Maybe I just look taller because I'm all legs and a short torso. I always have a hard time finding pants that are long enough because my height is all in my legs.
But I would say over 5'9 for a woman, and a man... over 6'5. But that's because I like my men to be between 5'11 and 6'3, so I don't think that's tall.