WASHINGTON (AP) - A new poll says America's aging baby boomers feel mostly upbeat about their futures. Just don't call them "old."

The children of the post-World War II baby boom are turning 47 through 65 this year, and the vast majority still consider themselves to be middle-aged. Asked when a person becomes "old," the median age the baby boomers give is 70. Younger generations say you're "old" at 60.

The AP-LifeGoesStrong.com poll shows baby boomers are more likely to be excited about the positive aspects of aging, such as retirement, than worried about the negatives, like declining health.

A third say they feel confident about growing older. That's almost twice as many as find it frustrating or sad.

And most say they expect to live longer lives than their parents.

(Copyright 2011 by The Associated Press.  All Rights Reserved.)