Advice for a (somewhat) late college starter

I asked a question a little similar to this a couple months ago, though about a different subject (dating). Hence the title, ahem. Anyway, this one is a little milder.

Simply put, I go to this really weird-a$$ high school. I’m 19, but what the school calls a “super senior”, meaning someone who takes an extra year to finish everything up. It actually isn’t discouraged (probably encouraged actually), and it’s a decision a lot of other students make as well, because there are a lot of requirements for graduation that go beyond what you would normally expect in high school, so it often takes more time.

However, it’s making me feel a bit weird, as I’m (hopefully/I’m assuming) college bound, and am obviously going to be a little older than most college freshman once I start. I’ll actually be turning 20 in the summer between my HS graduation and the beginning of my freshman year. I have generally good credentials from my school, good ACT scores, good reccomendations from teachers, etc…but the simple fact is that I am going to be old compared to most college freshman. I may have to look for a dorm that isn’t for freshman only, just so I can be with people closer to my own age.

So basically, anyone else have an experience similar to this? Taking an extra year in HS, or starting college a little late for whatever reason? For anyone who took an extra year (for whatever reason) or were older, was it a problem for you at all in getting into colleges? Thankfully the main university I’m looking at knows about my school, so they should be understanding, but I’m just a little concerned. Also, for anyone who started a little late (being somewhere in your early 20s by your freshman year, basically), was it weird for you socially, or did people not really care? Thanks.