In NJ, retail food licensing is a MUNICIPAL function - the county department of health provides inspection and plan-review services to contracting towns but does not itself sell the operating license. The annual license fee is set by each municipality's ordinance and is not published county-wide; typical NJ municipal retail-food license fees run roughly $100-$500/yr depending on the town and establishment size. Confirm the exact fee with the specific municipality (or the Bergen County Health Dept for towns it serves). Left null - no single county fee exists.
Turnaround: Not published. A plan review / pre-operational inspection is generally required before a municipality will issue a new retail-food license.
Mobile/food-truck licensing is also municipal in NJ. A mobile vendor typically needs a retail food license from the town where the unit is based plus separate approvals in each additional municipality it operates in, and must work from an approved commissary. Fees vary by town and are not published at the county level - left null.