The age distribution, , in Kesswil is; 113 children or 11.5% of the population are between 0 and 9 years old and 104 teenagers or 10.6% are between 10 and 19. Of the adult population, 115 people or 11.7% of the population are between 20 and 29 years old. 105 people or 10.7% are between 30 and 39, 161 people or 16.4% are between 40 and 49, and 141 people or 14.4% are between 50 and 59. The senior population distribution is 116 people or 11.8% of the population are between 60 and 69 years old, 86 people or 8.8% are between 70 and 79, there are 35 people or 3.6% who are between 80 and 89, and there are 5 people or 0.5% who are 90 and older.Statistical Office of Thurgau , MS Excel document – Altersstruktur der Wohnbevölkerung nach zivilrechtlichem Wohnsitzbegriff am 31.12.2009 accessed 23 June 2010
