here’s all the campuses of the UNC system in case you want to research them, crunch the numbers, and add any to your visit list:
https://www.northcarolina.edu/content/our-17-campuses
keep in mind that on-campus room and board seems to run from $9k-$13 per year, so if a school you like lists a cost of attendance over $30K, you could save $$$ and bring it under budget by living off-campus and buying your own food.