Fair Lawn's municipal facility at 8-01 Fair Lawn Avenue incorporates the municipal court and borough council chambers, as well as the offices of the mayor, the municipal clerk, the borough manager and the departments of buildings, engineering, police, finance, health and purchasing. The public library is nearby, at 10-01 Fair Lawn Avenue. The borough manager oversees all departments, most of which are open weekdays from 8:30am to 4:30pm.

Outside the municipal building, a plaque recognizes Fair Lawn residents serving in the Armed Forces.