Winterthur is a city in the canton of Zürich in northern Switzerland. With over 110,000 residents it is the country's sixth-largest city by population, and is the ninth-largest agglomeration with about 140,000 inhabitants. Located about 20 kilometres northeast of Zürich, Winterthur is a service and high-tech industrial satellite city within Greater Zürich.
The official language of Winterthur is German, but the main spoken language is the local variant of the Alemannic Swiss German dialect, Zürich German. Winterthur is usually abbreviated as Winti in the local dialect and by its inhabitants.
Winterthur is connected to Germany by direct trains and has links to Zurich Airport. It is also a regional transport hub: the A1 motorway from Geneva through to St. Margrethen connects in Winterthur with the A4 motorway heading north toward Schaffhausen and the A7 motorway heading close to the Swiss-German border at Kreuzlingen. There are also roads leading to other places such as Turbenthal. The railway station is the fourth busiest railway station in Switzerland, and is 20 minutes away by train from Zürich.