N.J. Stat. § 40A:9-27
The board of chosen freeholders of each county shall appoint a county treasurer for a term of 3 years. Except as otherwise provided by law, the county treasurer shall be the custodian of all county funds and disburse said funds only on the order of the board. He shall collect and receive all moneys due the county. He shall keep adequate records and unless there is a county comptroller, at least once a month report to the board the receipts and disbursements made by him. Where there is a county comptroller, the county treasurer shall report in such manner and at such times as the board shall direct. The county treasurer shall maintain general books of account in accordance with rules and regulations of the Local Finance Board in the Department of Community Affairs. The county treasurer shall perform such other duties as may be assigned to him from time to time by the board.
N.J.S. § 40A:9-27