Thalwil is a municipality and town in the district of Horgen in the canton of Zürich in Switzerland.

[3] The parish of Thalwil originally comprised four Wachten (hamlets): In medieval times, the economy consisted mainly of farms, vineyards as well as a small amount of fishing, crafts and shipping (on the lake).

The municipality of Thalwil is located on the Zimmerberg ridge between the western shore of Lake Zurich and the Sihl river.

Thalwil borders on the communes of Rüschlikon, Langnau am Albis, Oberrieden, Horgen and (across the lake) Erlenbach.

Of the rest of the land, 56.1% is settled (buildings or roads) and the remainder (2.2%) is non-productive (rivers, glaciers or mountains).

[5] The Gemeindewappen (communal flag or coat of arms) consists of two diagonally crossed black bulrushes with green stems and leaves on a white background.

It also has one of the most spectacular church locations,[citation needed] with the Platte affording views of the lake and its surroundings from Zurich to the Alps.

Although it was frequently hit by lightning and also looted and set on fire during the Old Zürich War (Alter Zürichkrieg), the original building survived for over six hundred years.

In 1845, the small and rather dilapidated chapel was demolished and replaced by a much larger church designed by Ferdinand Stadler.

A fire set off during repairs on the tower burnt down the new church almost 100 years later (1943) but the building was soon completely restored and has survived to this day.

It soon attracted large silk, cotton and other textile factories to the former farming village, some run by local families such as Schwarzenbach, Schmid, and Kölliker.

[5] According to the statistical office of Canton Zurich, Thalwil receives 92.0 million Franc in tax revenue every year, as of 2020.

The economy of Thalwil is mainly supported by a variety of small and medium-sized businesses, many located in the Böni commercial estate opened in 1971.

The main source of Thalwil's current prosperity lies in the large number of commuters (ca.