Yes. For one thing, it is going to be more competitive if you live in Wake and Mecklenburg Counties. Further, UNC-CH has been trying to increase enrollment from rural and economically depressed counties; so not living in a county that has a large urban area is likely to work to your advantage in admissions to UNC-CH.
Also, here is a link to an interactive dashboard for the past several years: Workbook: db_freshmen. This may allow you to see how students from your high school have fared in recent matriculated classes at UNC-CH.