| Organization / Program Name(s) | Located In | Office Phone | Areas Served |
|---|---|---|---|
| New Tecumseth Public Library, Tottenham, Pam Kirkpatrick Branch | New Tecumseth | 905-936-2291 | Adjala-Tosorontio ; Mono ; Mulmur ; New Tecumseth |
| New Tecumseth Public Library, Beeton, DA Jones Branch | New Tecumseth | 905-729-3726 | Adjala-Tosorontio ; Mono ; Mulmur ; New Tecumseth |
| New Tecumseth Public Library, Alliston, Memorial Branch | New Tecumseth | 705-435-5651 | Adjala-Tosorontio ; Mono ; Mulmur ; New Tecumseth |