Oberwinterthur, also known as Kreis 2, is a district located within the municipality of Winterthur in the canton of Zurich, Switzerland. It serves as one of the primary residential and urban sectors of the city.
The area is characterized by its integration into the broader urban fabric of Winterthur, providing local infrastructure and housing. As part of the Swiss municipal system, it follows the regional administrative guidelines of the canton of Zurich.