Sachem Public Library serves over 83000 district residents in an area that extends over three townships: Brookhaven, Islip, and Smithtown. Sachem Library cardholders are among the most active in the state with more than three quarters of a million items circulating each year. Sachem Library is governed by a Board consisting of five elected trustees. Each trustee serves a five-year term with one trustee position coming up for election each year.

Select Sundays from September thru June. See the library's website for the exact dates.