Pfäffikon is a municipality in the canton of Zürich in Switzerland. It is the seat of the district of the same name. It is not to be confused with Pfäffikon SZ on Lake Zurich but in the canton of Schwyz. History In Roman era, along Pfäffikersee there was built a Roman road from the vicus Centum Prata (Kempraten) on Obersee–Lake Zürich via Vitudurum (Oberwinterthur) to Tasgetium (Eschenz) to the Rhine. To secure this important transport route, the Irgenhausen Castrum was built. The native name of the fort is unknown, thus Irgenhausen was mentioned in 811 AD as Camputuna sive Irincheshusa. Maybe the castrum's name was Cambodunum, the name of the neighbouring village of Kempten (Wetzikon). Pfäffikon is first mentioned in 811 as faffinchova. In 965 it was mentioned as haffinchova. Geography Pfäffikon has an area of . Of this area, 43.3% is used for agricultural purposes, while 23.4% is forested. Of the rest of the land, 16.7% is settled (buildings or roads) and the remainder (16.5%) is non-productive (rivers, glaciers or mountains). housing and buildings made up 11.9% of the total area, while transportation infrastructure made up the rest (4.8%). Of the total unproductive area, water (streams and lakes) made up 11.4% of the area. 13.6% of the total municipal area was undergoing some type of construction. Pfäffikon is situated on Pfäffikersee in Zürcher Oberland southeastern of the city of Zürich. Neighbouring municipalities are Bäretswil, Bauma, Fehraltorf, Hittnau, Russikon, Seegräben, Uster, Wetzikon and Wildberg. The town is divided into four districts (Aussenwachten), namely Auslikon, Irgenhausen and Rutschberg situated on Pfäffikersee, as well as the districts of Ober Balm, Unter Balm, Bussenhausen, Oberwil, Sulzberg, Hermatswil, Schür, Wallikon, Rick, Ravensbühl, and Faichrüti. Demographics Pfäffikon has a population (as of ) of . , 17.6% of the population was made up of foreign nationals. the gender distribution of the population was 49% male and 51% female. Over the last 10 years the population has grown at a rate of 12.1%. Most of the population () speaks German (86.9%), with Italian being second most common ( 4.6%) and Albanian being third ( 2.3%). In the 2007 election the most popular party was the SVP which received 37.8% of the vote. The next three most popular parties were the SPS (15.4%), the CSP (14.5%) and the Green Party (10.7%). The age distribution of the population () is children and teenagers (0–19 years old) make up