Though I did spend some time in the Raleigh area last year and I must say I did see a lot of hijab wearing females. Usually in the grocery stores...but some everyday.
I’m not saying they aren’t here, as I have seen one or two women... but not in percentages big enough to be more than 5-10% of church going population (even if behind closed doors) to rival southern baptists, presbyterians, episcipalans, pentecostals, or catholics.