I was 27 and my wife was 21 when we got married. That was the right time for me. We had both graduated college. I had been engaged a couple of years earlier and called it off when I realized it wasn't going to work. Probably got engaged a little too quickly.
It'll be 8 years this May. That first year was TOUGH! But it has gotten better every year since.
Her parents go married really young (oops bambina on the way), my MIL was still in High School. They are still together 30 years later and are happy.
My parents were about 26 (Dad - I guess my Dad and I like the younger ladies) and 20, and they are still together nearly 40 years later.
I think the trend in society is to wait until mid to late 20's nowdays. College is part of that, so is the ever important "partying" (whatever that means).
How will you guys support yourselves? Do you/ will you both have jobs? Are there any college plans for either of you? There probably should be. I couldn't imagine being married in College. I put myself through and was always busy with work or classes or homework. But some people do it.
Those things being said, do what you feel and think is right. BUT DON'T GET MARRIED JUST BECAUSE EVERYONE IS TELLING YOU NOT TO! ! ! That will never work. Make sure you are BOTH TRULY COMMITTED to this relationship, and realize that marriage is about more than sex and romance. It's hard work, make sure you BOTH realize that and are committed to it.
That's just my advice, take it for what it's worth which...
Good luck.