The Tigard Library Board is responsible for communicating with the city manager and City Council about library policies, budget, facilities and other needs of the community to provide quality library service. The function of the board is established in the Tigard Municipal Code (2.36.030).

The Tigard Library Board consists of seven citizen members and two alternates appointed by the City Council for four-year terms. Of the seven members, at least six shall reside within the Tigard city limits and one may reside outside the city. The alternates do not vote.

The Tigard Library Board meets on the second Wednesday of each month. These meetings are open to the public.