Texas pulls a huge percentage of their players from within the state and have the highest rated classes:
https://www.google.com/amp/s/www.sbnation.com/platform/amp/college-football-recruiting/2018/2/14/17003548/recruiting-rankings-all-time-history
USC has dominated California recruiting for the last 15 years, Texas has also dominated since before the BCS era. Also, virtually no blue chipper leaves Ohio, they all play for the Buckeyes.