| Business | Phone |
| Central Islip Public Library 33 Hawthorne Ave, Central Islip 11722 | (631) 234-9333 |
| New York Institute Tech Lbry 900 Carleton Ave, Central Islip 11722 | (631) 348-3090 |
| Suffolk County Law Library 400 Carleton Ave, Central Islip 11722 | (631) 853-7864 |
| Supreme Court Law Library 400 Carleton Ave, Central Islip 11722 | (631) 853-7863 |