 The next three most popular parties were the SPS (13.8%), the Green Party (10.7%) and the FDP (10.6%).The age distribution of the population () is children and teenagers (0–19 years old) make up 28.6% of the population, while adults (20–64 years old) make up 57.4% and seniors (over 64 years old) make up 14%.In Ossingen about 79% of the population (between age 25-64) have completed either non-mandatory upper secondary education or additional higher education (either university or a "Fachhochschule").