How old?

7....and it was only because I know the family well!

My daughter is 8. She hasn't yet, but I think it will be soon.

My Son hasn't had a sleep over at a friends yet, he's only 5. But I have to say that in order for me to allow it in the future, I would have to know the family VERY VERY well & for a while. It is different today from when I grew up in the 70's. I always slept at different friends homes starting around 9 years old. It was a small town & everyone knew everything about everyone else & my Dad had a business where most of my friends parents were customers. Everyone was family. Today we live in a larger suburban area where no one knows anyone closely.

My daughter was not night trained until the middle of 6th grade. She really wanted to go to sleep away camp that summer and finally got trained. After that she started having sleep overs in 7th grade.

My son did it earlier in 5th grade. But he was only 3 houses down the block at a friends house.

really it depends on the kid I think...my daughter was maybe 8or9 ish? and it became more often when she was around 10-11

My dd spent the night at 7, my ds was 8. But we weren't really in a stable place until my daughter was 7 and my son 8 - her dad and I separated when she was 4 and he was 5 and were in a townhouse in an area with few kids.

6 it seems like a good age to me!

Hmm...around 7-8, I think.

My kids are 6 and 9, and it hasn't come up so far. I have no idea if or when they will.

My DD had her first night away at one of my friend's houses (our pediatrician) at 1 week old. She has stayed the night away at my BFF's house with their kids many many times since she was a year old and she is 3 1/2. She loves spending the night away and has a great time. It will be quite some time before she gets to do it again b/c they moved out of state last week.