 37 (or about 13.81% of the population) belonged to no church, are agnostic or atheist,FALSE

In Häfelfingen about 103 or (38.4%) of the population have completed non-mandatory upper secondary education, and 34 or (12.7%) have completed additional higher education (either university or a "Fachhochschule").Of the 34 who completed tertiary schooling, 70.6% were Swiss men, 20.6% were Swiss women., there were 8 students in Häfelfingen who came from another municipality, while 35 residents attended schools outside the municipality.