 Over the last 10 years the population has grown at a rate of 12.9%.Most of the population () speaks German (93.5%), with Italian being second most common ( 3.1%) and French being third ( 0.7%).The age distribution, , in Muhen is; 335 children or 9.6% of the population are between 0 and 9 years old and 438 teenagers or 12.6% are between 10 and 19.