 5.7% of families and 15.5% of people were below the Census Bureau's poverty thresholds (different from the federally defined poverty guidelines), including 26.0% of those under age 18 and 3.7% of those age 65 or over.According to self-reported ancestry figures recorded by the ACS, the five largest ancestral groups in Preston Township in 2013 were Germans (27.3%), English (22.5%), Irish (17.6%), Poles (13.3%), and Russians (5.5%).Those reporting American ancestry made up 3.4% of the population.