At what age should a child be introduced to religion?

[The Grand Nudger]

That's around the time we begin to develop a sense of independent agency (among other things..lol). I think it even gets placed one year earlier, doesn't it? 11-14.

[arewethereyet]

After they turn 12, but do so in an open and inquisitive way. They have to realize that they are free to be intellectually independent and that moral responsibility is more important than belief.

I find 12-14 an interesting age. Anecdotally I've noticed that most people who either leave religion or join religion do so at that period.

As a mom I can say that 12-14 year old boys are interesting and fun to be around while girls that age are a trial.  I have one son and two daughters...it's a miracle I made it through the girls teen years to actually get my son to that age.  

[Neo-Scholastic]

Okay, I will give a serious answer. Children should learn age-appropriate content about religion the same way they should learn about sex. Learning that STDs will ruin your life comes before discovering Tantric bliss techiques. Being taught scary bible stories came long before exposure to nuanced theological speculations.

(At least that's how it happened for me...which of course means that it seems normal and natural to me projecting that on to the world.) :-)

[Oracle]

Honestly, it depends on what "to introduce" means.

If you mean "to introduce" as in "to be indoctrinated", at no age is that appropriate imo.

If it means to is to talk about it for knowledge and educational purposes, then it depends on the maturity of the child. It would be appropriate when the child turns 11 or 12 (on average) to introduce this knowledge to them with an open mind and to have them ask questions about it.

[Belacqua]

Honestly, it depends on what "to introduce" means.

"Daddy, what's that building you go to every Sunday morning?"
"Sorry, Timmy, I can't answer that question until you're 12 years old."

"Mommy, what's that pendant you wear around your neck?" 
"This is not for you to know until you reach the age of reason. Ask again then."

[polymath257]

At what age should children be introduced to other mythology?

[The Grand Nudger]

Kids are introduced to mythology even earlier. Religion is a bit more complicated than what we’d expect a younger child to comprehend. That’s the utility of myths and fables and ghost stories in the first place.

[Mister Agenda]

Honestly, it depends on what "to introduce" means.

"Daddy, what's that building you go to every Sunday morning?"
"Sorry, Timmy, I can't answer that question until you're 12 years old."

"Mommy, what's that pendant you wear around your neck?" 
"This is not for you to know until you reach the age of reason. Ask again then."

Could you elaborate on how this relates to Bruce's post, particularly given that Bruce was kind enough to elaborate on what was meant by 'introduce', which you omitted?

[arewethereyet]

Honestly, it depends on what "to introduce" means.

"Daddy, what's that building you go to every Sunday morning?"
"Sorry, Timmy, I can't answer that question until you're 12 years old."

"Mommy, what's that pendant you wear around your neck?" 
"This is not for you to know until you reach the age of reason. Ask again then."

When kids start asking questions, it's the time to answer them in a way appropriate to their age and level of understanding.

I remember having my first communion and really not having a damn clue what was going on...I was six, and was parroting what I had been taught.

For confirmation, I didn't know much more other than...this is what we do.

I think for the RCC those ages are a little higher now but I don't know how much the kids really understand what they are doing other than going through the paces.

[The Grand Nudger]

-even the hypothetical answers to the above are entirely unlikely to yield a description of religion. More a flat statement of faith.