The borough of Mahaffey is in the southeastern part of the township but is a separate municipality.

[3] The West Branch Susquehanna River crosses the southern part of the township from southwest to east, passing through Mahaffey.

Chest Creek enters the West Branch from the south at Mahaffey.

24.1% of all households were made up of individuals, and 12.1% had someone living alone who was 65 years of age or older.

Bell Township is located within the Purchase Line School District.