I love love love tall girls! They are so attractive! I don't even look at girls shorter than 5'8, they don't interest me at all.
Guys your age are still growing. They also know girls don't like guys shorter than them, so if you're interested in someone shorter, give him a few subtle hints to encourage him. Love your height and wear it with pride!
Most guys don't hate tall girls, but they aren't particularly in a hurry to approach or try to talk to you in a friendly or flirty manner. When guys are young, they're just learning how to interact with girls and their first attempts are often quite clumsy. It is also true that girls VASTLY prefer taller guys, meaning that many guys that are your height or shorter (which is a lot if not the majority of teenage guys) think that YOU DO NOT WANT them. It is assumed that you want a guy 6'2" and above, as girls universally want to be shorter than their man, at least in an ideal world.
Being that tall means one of two things if you want a boyfriend.
1. You have to focus your flirting efforts on guys that are taller than you are and be a sweet giant.
2. Make an effort to approach guys your own height and shorter and befriend or flirt with them first, so that they don't think that you automatically rule them out just because you're taller than them.
Being a tall girl at a young age does make finding a boyfriend harder than being shorter. That doesn't mean you can't find success, but you have to realize that many guys will make assumptions unless you prove them wrong. It doesn't make it "right" or "fair" but you can still make it work to your advantage if you play your cards right. Remember, some of these guys haven't hit their growth spurt yet, but will soon. As you get older, it does get easier, as the guys get taller too. In the mean time, use the tips above and put yourself out there. Be the friendly tall girl, not the passive tall girl that hides herself.
Your only 16 your don't need those high school buffoons. Just do your thing until college and those boys have a little more life experience. 16 y/o boys are mean that has never changed. I know my son is 14 and my daughter in 17.