 The next three most popular parties were the SPS (15.2%), the CSP (12.6%) and the Green Party (8.1%).The age distribution of the population () is children and teenagers (0–19 years old) make up 26.1% of the population, while adults (20–64 years old) make up 62.9% and seniors (over 64 years old) make up 11%.In Glattfelden about 70.5% of the population (between age 25-64) have completed either non-mandatory upper secondary education or additional higher education (either university or a "Fachhochschule").