In my experience, it doesn't matter what you set your age or distance range to in Tinder, because you're going to get people 10 years older or younger and a hundred miles farther away than you specify anyway.
There's a little toggle box that says "only show me people in this age range" and that always works for me.
Yeah, that just never seems to work for long. I currently have it set to 35-45, and it's showing me 20-somethings. And I live in a huge city, so it's not like it's running out of people in my age range to show me.