Mercer County Treasurer’s Office

Mercer County Treasurer’s Office

The Mercer County Treasurer’s Office acts as the central financial custodian for the County of Mercer, operating under the administrative umbrella of the Department of Finance. Located within the McDade Administration Building at 640 South Broad Street in Trenton, this office is responsible for the receipt, safekeeping, and disbursement of all county public funds. The Treasurer plays a critical role in the county’s fiscal integrity by managing cash flow, investing idle funds to generate revenue, and maintaining dozens of distinct bank accounts to ensure precise accountability.

Financial Operations and Responsibilities

The Treasurer’s Office handles the backend financial machinery of the county government, rather than direct consumer taxation. Its primary duties include:

• Cash Management: Recording and depositing all monies received by the county, including state and federal grants, county fees, and shared revenues.
• Disbursements: Processing payments to vendors for goods and services, ensuring that all county obligations are met in a timely manner.
• Payroll Administration: Managing the in-house payroll system and administering pension funds for county employees.
• Bail and Trust Funds: Acting as the custodian for bail funds and other court-related trust accounts, holding them until court orders direct their release.

Location and Security

As part of the Mercer County government complex, the Treasurer’s Office requires visitors to adhere to strict security protocols. Access to the Administration Building is controlled; all visitors must pass through a security screening checkpoint equipped with metal detectors and bag x-ray machines. A valid government-issued photo ID is required for entry. While the office is open to the public for specific inquiries, many financial transactions with the county are handled via mail or electronic transfer rather than in-person cash payments.