 Hispanics and Latinos of all races made up 0.5% of the population.66.5% of Preston Township's households were families, 56.7% were headed by a heterosexual married couple (Pennsylvania did not allow same-sex marriage until May 20, 2014, after the 2010 Census had been completed), and 22.3% included children under the age of 18.6.2% of households were headed by a female householder with no husband present, 3.6% by a male householder with no wife present, and 33.5% consisted of non-families.