Career and Transfer Specialist
What exactly do you mean by "the amount of people attending?" If you're referring to the fact that some people choose to start at a community college because the classes are generally smaller - well, whether or not it would beneficial to you very much depends on your comfort level and learning style. I would recommend taking a tour of any college you're considering and just seeing whether or not you would be comfortable there. Does the college feel too big? Just right?
For some people, they prefer small class sizes, so they choose to start at a community college. Depending on the four-year college you go to, some of the general intro classes are pretty large (100+ people), then (usually), the classes get smaller as you take more major-specific classes. This is not true for all four-year colleges though, which is why I recommend going on a tour if you are able, or oftentimes, colleges have their faculty:student ratio posted on their website somewhere.
I hope that helps, let me know if I need to expand on any of this!