 Over the last 10 years the population has grown at a rate of 10.1%.Most of the population () speaks German (83.0%), with Italian being second most common ( 4.9%) and Albanian being third ( 2.6%).The age distribution, , in Mellingen is; 475 children or 10.4% of the population are between 0 and 9 years old and 552 teenagers or 12.1% are between 10 and 19.