 The age distribution of the population () is children and teenagers (0–19 years old) make up 18.6% of the population, while adults (20–64 years old) make up 61.7% and the seniors (over 64 years old) make up 19.8%.In Untersteckholz about 79.7% of the population (between age 25-64) have completed either non-mandatory upper secondary education or additional higher education (either University or a "Fachhochschule").Untersteckholz has an unemployment rate of 0.17%.