Of the unproductive areas, and . The municipality is located in Frauenfeld District. The current municipality was created in 1998 from the former Munizipalgemeinde (Municipal commune) and the former Ortsbürgergemeinde of Herdern and the village of Lanzenneunforn. Demographics Herdern has a population () of . , 7.6% of the population are foreign nationals. Over the last 10 years (1997–2007) the population has changed at a rate of 5.9%. Most of the population () speaks German (95.5%), with Albanian being second most common ( 1.7%) and French being third ( 0.6%). , the gender distribution of the population was 49.7% male and 50.3% female. The population was made up of 427 Swiss men (45.5% of the population), and 40 (4.3%) non-Swiss men. There were 441 Swiss women (47.0%), and 31 (3.3%) non-Swiss women. In there were 11 live births to Swiss citizens and 1 birth to non-Swiss citizens, and in same time span there were 5 deaths of Swiss citizens and 1 non-Swiss citizen death. Ignoring immigration and emigration, the population of Swiss citizens increased by 6 while the foreign population remained the same. There were 3 Swiss men who emigrated from Switzerland to another country, 1 Swiss woman who emigrated from Switzerland to another country, 7 non-Swiss men who emigrated from Switzerland to another country and 1 non-Swiss woman who emigrated from Switzerland to another country. The total Swiss population change in 2008 (from all sources) was an increase of 25 and the non-Swiss population change was an increase of 3 people. This represents a population growth rate of 3.1%. The age distribution, , in Herdern is; 111 children or 11.3% of the population are between 0 and 9 years old and 139 teenagers or 14.2% are between 10 and 19. Of the adult population, 107 people or 10.9% of the population are between 20 and 29 years old. 121 people or 12.3% are between 30 and 39, 199 people or 20.3% are between 40 and 49, and 142 people or 14.5% are between 50 and 59. The senior population distribution is 80 people or 8.2% of the population are between 60 and 69 years old, 41 people or 4.2% are between 70 and 79, there are 38 people or 3.9% who are between 80 and 89, and there are 3 people or 0.3% who are 90 and older. the average number of residents per living room was 0.56 which