Lausanne District () is a district in the canton of Vaud, Switzerland. The seat of the district is the city of Lausanne. Geography Lausanne has an area, , of . Of this area, or 27.3% is used for agricultural purposes, while or 30.9% is forested. Of the rest of the land, or 41.6% is settled (buildings or roads) and or 0.1% is unproductive land. Demographics Lausanne has a population () of . Most of the population () speaks French (159,559 or 79.6%), with German being second most common (8,534 or 4.3%) and Italian being third (7,942 or 4.0%). There are 99 people who speak Romansh. Of the population in the district 46,742 or about 23.3% were born in Lausanne and lived there in 2000. There were 43,411 or 21.7% who were born in the same canton, while 34,479 or 17.2% were born somewhere else in Switzerland, and 68,966 or 34.4% were born outside of Switzerland. In there were 978 live births to Swiss citizens and 671 births to non-Swiss citizens, and in same time span there were 976 deaths of Swiss citizens and 141 non-Swiss citizen deaths. Ignoring immigration and emigration, the population of Swiss citizens increased by 2 while the foreign population increased by 530. There were 15 Swiss men and 70 Swiss women who emigrated from Switzerland. At the same time, there were 2323 non-Swiss men and 1903 non-Swiss women who immigrated from another country to Switzerland. The total Swiss population change in 2008 (from all sources, including moves across municipal borders) was an increase of 1108 and the non-Swiss population increased by 2428 people. This represents a population growth rate of 2.5%. The age distribution, , in Lausanne is; 14,278 children or 9.7% of the population are between 0 and 9 years old and 14,983 teenagers or 10.1% are between 10 and 19. Of the adult population, 23,858 people or 16.2% of the population are between 20 and 29 years old. 25,113 people or 17.0% are between 30 and 39, 21,574 people or 14.6% are between 40 and 49, and 16,877 people or 11.4% are between 50 and 59. The senior population distribution is 13,513 people or 9.1% of the population are between 60 and 69 years old, 9,651 people or 6.5% are between 70 and 79, there are 6,567 people or 4.4% who are 80 and 89, and there are 1,275 people or 0.9% who are