At the 2000 census, there were 1,217 people, 516 households, and 347 families living in the township.

The area is served by the Schuylkill Valley School District.

[6] U.S. Route 222 is the most prominent highway serving Ontelaunee Township.

U.S. Route 222 Business begins at US 222 and heads southward in the southeastern corner of the township.

Pennsylvania Route 61 follows Pottsville Pike along a northwest-southeast alignment across the western portion of the township.

Finally, Pennsylvania Route 73 follows Lake Shore Drive northeastward from PA 61 across the central portion of the township.