Holmdel's oldest fire company was established in 1917. Its present location was dedicated in 1961. Until the creation of a second fire company in 2006, it was the sole fire company in Holmdel, responding to emergencies with the assistance of neighboring towns.
The all-volunteer company rents out its hall and runs a local fund drive to help maintain its operations.
Holmdel operates under the Township Committee form of government. Five committee members are elected at large for three-year, overlapping terms. The committee selects the township mayor at the annual reorganization meeting. The committee meets for regular meetings on the first and third Thursdays of the month in the Meeting Room at Town Hall. Meetings begin at 7pm.
The following departments are located inside Town Hall: Board of Health and Registrar; Township Clerk; Construction and Code Enforcement; Municipal Court and Clerk; Library; Planning and Zoning Board; Recreation and Parks; Tax Assessor and Tax Collector; Police; Finance and Purchasing; Administrator; and the Board of Education.