[4] The village was built north of the twelfth-century Benedictine Fischingen Abbey.

It was, together with Bichelsee, Balterswil, Ifwil, and probably Au, part of the old Fischinger court, which opened in 1432.

[3] The Catholic village church was supported by the Abbey, while the Reformed minority belonged to the Dussnang parish.

The pilgrimage chapel grew up around the grave of Saint Ida of Toggenburg, who had lived in the Abbey.

Between 1685 and 1687 a new abbey church was constructed, and in 1705 a new chapel dedicated to Saint Ida.

In the 18th century part of the monastic premises was rebuilt, but could not be completed because of the abbey's accumulated debts.

[5] Fischingen has an area, as of 2009[update], of 30.62 square kilometers (11.82 sq mi).

[6] The municipality is located in the Münchwilen district, on the northern foot of the Hörnli.

It consists of the villages of Fischingen, Au, Dussnang, Oberwangen and Tannegg as well as over 100 scattered settlements.

[8] The age distribution, as of 2009[update], in Fischingen is; 257 children or 10.0% of the population are between 0 and 9 years old and 360 teenagers or 14.1% are between 10 and 19.

[15] The historical population is given in the following table:[3] St. Martins Chapel, the Catholic Church of Dussnang, the Benedictine Monastery (now Priory) with Church and Ida Chapel and the ruins of Tannegg Castle are listed as Swiss heritage site of national significance.

[9] From the 2000 census[update], 1,403 or 53.9% were Roman Catholic, while 816 or 31.3% belonged to the Swiss Reformed Church.

Of the children in kindergarten, 32 or 54.2% were female, 1 or 1.7% were not Swiss citizens and 1 or 1.7% did not speak German natively.

The lower and upper primary levels begin at about age 5-6 and last for 6 years.

At the lower primary level, there were 39 children or 41.5% of the total population who were female, 5 or 5.3% were not Swiss citizens and 4 or 4.3% did not speak German natively.

There were 59 teenagers who were in the advanced school, of which 38 or 64.4% were female, 2 or 3.4% were not Swiss citizens and 2 or 3.4% did not speak German natively.

There were 43 teenagers who were in the standard school, of which 16 or 37.2% were female, 4 or 9.3% were not Swiss citizens and 3 or 7.0% did not speak German natively.