I am from LA and you have to be 18 and over to get a tattoo!! Depends were you get it and what kind of tattoo you get! I went to 4 sessions at 3hrs each time!! I have a 1/2 sleeve tattoo with a lot of detail and lots of color!! But I do have to day well worth the pain!! I actually fell asleep in one session so if you can take the pain.. GO FOR IT!!!
For me, I got a huge tattoo on my lower back and it was not bad at all. It felt like a bunch of ant bites simultaneously. When they colored it in, some of that felt like scratches from a razor blade. Not bad... Just keep in mind that the outcome is well worth it for something you really want. 18 is the legal age in the south.
The feeling of getting a tattoo will depend on how you will hold on to the pain. The position or location of the tattoo will determine the comfortability; it can be mildly uncomfortable, or agonizingly painful. Though sometimes you can get a tattoo at a younger age with approval from the parental, it is advisable to get it when you are at least 18 years old.
I have not seen them myself but my mom a 5th grade teacher told me a story about one of her students parents got her kids tattoos for Christmas they were 5th 7th and8th grade boys in Missouri pretty ridiculous if you ask me... Just make sure it's something you will like for the rest of your life...