DH was 22 when he had his first, with his ex. We had our two when I was 27 and 30. In our peer group, he was exceedingly young (i.e ten years younger) than all of our friends to have a child, and I was having my second when the first of our friends were having their firsts.
Now approaching 40, I have FAR more friends with toddlers than I do with secondary aged children.
It definitely really depends on your peer group. We live London/Home Counties borders, most of our friends went to uni, they almost all started families well into their 30s.