I'm 33, OH is 32. We were 30 and 29 when our first was born.
I think that on baby forums the 30-somethings are a little under-represented. I'll go to a baby group or look on my fb feed and everyone is having babies in their 30's. It seems a much more common age to be having children, but many of my age peers just aren't as used to using the interwebs for talking as you younglings are. It was all Yahoo chat rooms for nerds when we were in our teens.