Bertschikon is first mentioned in 1255 as Bersinkon. The village of Gündlikon is first mentioned in 774 as Cundilinchova though the identification is debated. It is mentioned in 1162 as Gundilinchova. The municipality was created during the Helvetic Republic though it wasn't fully established until 1882. It consists of seven old municipalities; Bertschikon, Gundetswil, Kefikon, Liebensberg, Stegen, Gündlikon and Zünikon.
Geography
Before the merger, Bertschikon had a total area of. Of this area, 68.8% is used for agricultural purposes, while 20.2% is forested. Of the rest of the land, 10.8% is settled and the remainder is non-productive. housing and buildings made up 4.3% of the total area, while transportation infrastructure made up the rest. Of the total unproductive area, water made up 0.1% of the area. 3.9% of the total municipal area was undergoing some type of construction. The municipality consists of over 30 villages, hamlets and individual houses along the border with the Canton of Thurgau.
Bertschikon had a population of 1,049. , 5.5% of the population was made up of foreign nationals. the gender distribution of the population was 51.3% male and 48.7% female. Over the last 10 years the population has grown at a rate of 2.6%. Most of the population speaks German , with Italian being second most common and French being third. In the 2007 election the most popular party was the SVP which received 65.8% of the vote. The next three most popular parties were the CSP, the SPS and the Green Party. The age distribution of the population is children and teenagers make up 27.1% of the population, while adults make up 61.2% and seniors make up 11.7%. The entire Swiss population is generally well educated. In Bertschikon about 81% of the population have completed either non-mandatory upper secondary education or additional higher education. There are 340 households in Bertschikon. Bertschikon has an unemployment rate of 0.81%. , there were 109 people employed in the primary economic sector and about 44 businesses involved in this sector. 38 people are employed in the secondary sector and there are 14 businesses in this sector. 99 people are employed in the tertiary sector, with 23 businesses in this sector. 35.6% of the working population were employed full-time, and 64.4% were employed part-time. there were 184 Catholics and 684 Protestants in Bertschikon. In the 2000 census, religion was broken down into several smaller categories. From the, 71.8% were some type of Protestant, with 67.9% belonging to the Swiss Reformed Church and 3.9% belonging to other Protestant churches. 17.5% of the population were Catholic. Of the rest of the population, 0% were Muslim, 1.4% belonged to another religion, 3.5% did not give a religion, and 5.6% were atheist or agnostic. The historical population is given in the following table:
