Necochea is a coastal partido and city area in the southeast of the Buenos Aires Province, Argentina.

In the census of 2001 Neochea Partido had a population density of exactly 20.00 inhabitants per square kilometre (51.8/sq mi).

The economy of Necochea benefits from an influx of tourists from Gran Buenos Aires during the summer vacation season (December–February).

The main elements of the non-tourist economy are farming, the production of agricultural chemicals and biodiesel.

This article about a place in Buenos Aires Province, Argentina is a stub.