The New Jersey counties with the highest percentage of children who are unvaccinated are Ocean, Cape May, and Atlantic counties, according to data from the state Department of Health. Most of New Jersey's other 18 counties don't even come close to the local number of unvaccinated kids, but vaccination rates continue to fall statewide. New Jersey's Highest Unvaccinated CountiesAmong New Jersey counties, Ocean had the highest percentage of religious exemption requests, while Mercer had the lowest. Here is the local data on the number of unvaccinated school children. Religious Exemptions to VaccinesNew Jersey state law lays out the procedure for claiming a religious exemption.