Osasco () is a municipality in the state of São Paulo in Brazil, located in the Greater São Paulo area and ranking fifth in population among São Paulo municipalities. According to the IBGE 2015, Osasco currently has the ninth highest gross domestic product in Brazil, and the second largest in the state of São Paulo. The population is 699,944 (2020 est.) in an area of . It is among the world's more densely populated cities, similar in density to Tokyo and New York City. It is considered the major urban centre of the western portion of Greater São Paulo. It was a district of the city of São Paulo until February 19, 1962, when Osasco became a municipality of its own. The city motto is Urbs labor, a Latin phrase that means "City work."
The region that is now Osasco was inhabited by indigenous Tupi-GuaranÃÂ people.
Bandeirantes lived in the region that is now Osasco, then called "Vila de Quitaúna". The famous "bandeirante" António Raposo Tavares lived there.
Osasco was founded in the 19th century by Italian immigrant Antônio Giuseppe Agù (currently the name of one of the main streets in Osasco). He came from commune Osasco in the province of Turin, Italy.
Immigrants from Italy, Spain, Portugal, Germany, Armenia, Lebanon, Russia, Palestine and Japan came to Osasco during the late 19th Century and early 20th Century, and their descendants form the bulk of Osasco's population.
Osasco became autonomous from the city of São Paulo on February 19, 1962.
In 1968, the Cobrasma factory went on strike.
Osasco was an industrial city but there was industrial decentralization to other regions and today the city is moving toward the retail and service industries. Osasco is the location of the headquarters of Bradesco, the third largest bank in Brazil. Currently there are a number of large companies with a presence in the city, such as Natura, Coca-Cola, Carrefour, Wal-Mart, Colgate-Palmolive and many others. Osasco is the ninth most productive city in the countryin GDP per capita terms.
Osasco has an average elevation of and an area of . Its borders São Paulo to the north, east, and south, Cotia to the southwest, CarapicuÃÂba and Barueri to the west, and Santana de ParnaÃÂba to the northwest.
As in almost all the metropolitan area of São Paulo, the climate is subtropical, specifically humid subtropical. The average annual temperature is around . The month of July the coldest, with an average temperature of , and February is the warmest, averaging . The annual rainfall is around .
(Source: IPEA data) <div style="text-align:center;margin:0 auto;"> Changing demographics of the city of Osasco<br />
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Source: IBAM
Source: 2022 census
Due to its proximity to São Paulo, it is largely served by the CPTM commuter rail service, as well as many roads, providing a seamless connection into the state capital.
It is linked by CPTM rapid transit to São Paulo by the 8 and 9 train lines.
Roads of Osasco:
Osasco is twinned with: