It is a numbers game. If you look at the number of HS by state, extrapolate out 7-10 seniors a year and then identify the number of college programs offering baseball you will see that states like Pennsylvania, Massachusetts and Ohio have more roster spots available to less players in their respective states. If you are a good player from a state with more players than roster spots you will have a far greater success finding a team if you are willing to leave your home state.
My son played on a very good HS program in norther California. He was probably the 5-6th best player on his HS team. He got very little attention from California schools. Yet he had offers in South Carolina, Ohio and Texas. He choose to go to school in Texas and had a very successful collegiate career. If he was unwilling to expand his horizons he may of not had an opportunity to play collegiate baseball.