 Most of the population () speaks German (89.6%), with Italian being second most common ( 2.7%) and Serbo-Croatian being third ( 2.0%).Of the Swiss national languages (), 1,697 speak German, 5 people speak French, 52 people speak Italian, and 1 person speaks Romansh.The age distribution, , in Lichtensteig is; 188 children or 9.9% of the population are between 0 and 9 years old and 247 teenagers or 13.0% are between 10 and 19.