Interesting article calculates the % of catches x the ages of the teams receivers (WR, TE, RB... whoever caught balls in 2013) to determine the youngest & oldest groups.
Cincinnati finished as the youngest group in the NFL with a weighted average age of 24.2 years old.
The oldest teams weer San Francis & Carolina, who both were at 29.6 years.
They have a nice write-up on the Bengals core group of receivers - sorry, they didn't mention Tate :-)
Finally, we get to the team with the youngest group of targets in the NFL: the Cincinnati Bengals. Cincinnati’s skill position players are the envy of the league. Read that sentence again, and think about how odd that sentence reads to anyone who remembers the pre-Marvin Lewis Bengals. A.J. Green won’t be 26 until the start of training camp. Marvin Jones just turned 24. Giovani Bernard is only 22 and recorded 514 receiving yards last year despite being just a part-time player as a rookie. Jermaine Gresham will be 26 in June, which must mean he’s getting too old to be a Bengal. That’s not an exaggeration: expect Tyler Eifert (24 in September) to steal the tight end job this season, and for Gresham to be with a new team in 2015. And Mohamed Sanu will be just 25 in August.
That statement above was not an exaggeration. Andy Dalton has everything a quarterback could ask for and more. He even has a pair of bookend tackles in Andrew Whitworth and Andre Smith. Ignoring the quarterback position, the Bengals almost certainly have the top roster in the AFC, after accounting for age and talent. The real question in Cincinnati: after 100 starts in college and the pros, are there any more "steps" for Dalton to take?
Throw in Cobi, and the age gets even younger.
At the end of the day, the Bengals have done a nice job of acquiring some good, young talented weapons to catch the ball. And given the young ages of Gio & Jeremy Hill, they also have some good, young talent running the ball.