I'm 26 in 2 months and I have been seriously, all-consuming my broody since 21. My situation is maybe slightly different though as my broodiness was brought on by an unplanned pregnancy and losing the baby. I have focused on achieving some personal goals since then, such as finishing my honours degree, completing a years training to make me fully qualified, buying a house which is suitable for a young family, and "living my life" for a while by going on nice holidays and being able to go out at the drop of a hat.
I agree with pp, it isn't about age it is more about situation. I have been broody since 21 but only seriously emotionally ready since 22, I feel my relationship was ready by about 23 and financially we have been ready for a few months now. I know people who had kids younger than me and were fine, but based on my personal goals (and obviously my partners!) now is probably the ideal time for us. There is no way we would have been on the holidays which we have done, there is no way I would have my career, there is no way we would have owned a home if we had tried for a baby when I really wanted to. But my friend had her first at 17 and never complains or feels she missed out as her goals were different than mines.
The one thing I would bear in mind is that you can undo a baby. Get your eggs in a basket first, then have a baby. If you feel you are truly ready (and not just broody) then go for it!