I graduated from highschool in 2009, would my application be considered as a domestic application if I were to apply?

Pretty sure it has to do with your status in Ontario/Canada. A permanent resident or someone with citizenship would be domestic.

Not asians.

Just kidding, just kidding, I'm not racist lol. That's just the first thing that came into my head, I'm sorry

Domestic students just means you're a Canadian citizen or permanent resident and you studied somewhere in Canada for highschool.

The reason I'm asking this question in the first place is to determine which category I fall into from this page:

http://registrar.mcmaster.ca /futur...deadlines.html

I'm applying to computer science, I'm 19 years old (graduated in June/09), I was born in Canada, and I've attended some post-secondary.

So would I be considered a Domestic Applicant since I'm not currently in 12th grade?

As several people have said the word domestic is just refereing to the fact that you are Canadian and has nothing to do with if you are in school currently or not. So, yes you are a domestic applicant.

Personally, I would called up OUAC and talk to them.

This is due to the fact that you had some post-secondary. Application procedure is going to be a bit more expensive and complex than if you are currently still in High School.

Being a domestic student has nothing to do with when you graduated or what you're doing now. It simply means that you have a Canadian passport/PR card and that you're not an international student.