Uster is a city and capital of the district Uster in the Swiss Canton of Zürich. It is the third largest city in the Canton of Zürich, with over 30,000 inhabitants, and is one of the twenty largest cities in Switzerland. Uster is located next to lake Greifensee. The city of Uster received the Wakker Prize in 2001. Uster has an area of. Of this area, 44.4% is used for agricultural purposes, while 27.1% is forested. Of the rest of the land, 26.2% is settled and the remainder is non-productive. housing and buildings made up 18.4% of the total area, while transportation infrastructure made up the rest. Of the total unproductive area, water made...more »