 Most of the population () speaks German (86.4%), with Albanian being second most common ( 4.7%) and Serbo-Croatian being third ( 2.4%).Of the Swiss national languages (), 6,829 speak German, 15 people speak French, 134 people speak Italian, and 7 people speak Romansh.The age distribution, , in Kirchberg is; 1,148 children or 14.5% of the population are between 0 and 9 years old and 1,235 teenagers or 15.6% are between 10 and 19.