A state school would be much more likely to be a 2+4 program, whereas a private school, or one that is exclusively health sciences, would be more likely to be a 0+6 program.
Unless you're in a 0+6, you will not be able to just declare a pharmacy major and be done with it. You would have to do your pre-requisites and then apply. Now, when I did this 20 years ago, all I had to do was send an application and my transcripts to the schools I wanted to apply to (I applied to 4, which was unusual at the time - most people only applied to one - and was accepted at 3) but now, you send your information - what's required will vary from school to school - to a central clearinghouse whose name escapes me right now, and if you are a suitable candidate, they will probably call you for an interview. The fee is steep but IIRC you can apply to 6 schools for that single fee, which makes the schools look much more competitive than they really are.
My alma mater admits 108 people a year and receives over 1,000 applications. At the time I applied, they got about 400 but keep in mind that some people applied to more than one school. My graduating class had 86 people; yes, about 10% a year will drop out, be expelled, flunk out, change majors, or fall a year behind for various reasons.
