Grande Porto Subregion
Grande Porto (Greater Porto ) is a Portuguese subregion, part of the Região Norte. While Espinho is part of the District of Aveiro, the remaining circuits are assigned to the District of Porto. The neighboring regions are Cávado in the north, and the Tamego Ave in the east, Entre Douro e Vouga and Baixo Vouga in the south and the Atlantic Ocean to the west. On the area of 817 km ² 1,285,352 people lived in 2009.
The nine circles ( concelhos ) are: