Oka ( port. Ouca ) - district (freesia) in Portugal , part of Aveiro district. It is a part of the Vagush municipality. It is part of a large urban agglomeration of Big Aveiro . According to the old administrative division was part of the province of Beira-Litoral . Included in the economic statistical subregion of Baishu-Voug , which is included in the Northern region . The population is 1874 people. It covers an area of 16.29 km².
|Region||Northern Region (Portugal)|
|History and geography|
|Density||115.0 persons / km²|
The patron saint of the area is Martin Tours ( port. São Martinho ).
District founded in 1966