Lomas de Zamora is a partido (district) of Buenos Aires Province, Argentina, and part of the Greater Buenos Aires urban agglomeration.

Lomas de Zamora Partido de Lomas de Zamora
Partido
location of Lomas de Zamora Partido in Greater Buenos Aires
Coordinates: 34°46′S 58°23′W / 34.767°S 58.383°W / -34.767; -58.383
Country	Argentina
Province	Buenos Aires
Established	July 10, 1861
Founded by	Esteban Adrogué
Seat	Lomas de Zamora
Government
• Mayor	Federico Otermín (UxP)
Area
• Total	89 km2 (34 sq mi)
Population [1]
• Total	613,192
• Density	6,900/km2 (18,000/sq mi)
Demonym	lomense
Postal Code	B1832
IFAM	BUE074
Area Code	011
Patron saint	Nuestra Señora de la Paz
Website	lomasdezamora.gov.ar

It has an area of 89 km² (34 sq mi) and a population of 613,192 (2001 census [INDEC]),^[1] the second-most populous partido in the Greater Buenos Aires agglomeration. The local government's seat is at the city of Lomas de Zamora.