Capital of Buenos Aires province, Argentina, on the Río de la Plata 48 km/30 mi southeast of the city of Buenos Aires; population (2001) 563,900. It is 9 km/6 mi from its port, Ensenada, the main outlet for produce from the Pampas. Industries include meat packing and petroleum refining. It has one of the country's best universities. The city was founded in 1882 by Governor Daroo Rocha.
Blue stands for peace. The tassel is a symbol of the monarchy. Yellow represents mineral wealth. Red symbolizes battle. Effective date: 30 October 1967.