Which city is located at 12 degrees south latitude and 77 degrees west longitude

The city located at 12 degrees south latitude and 77 degrees west longitude is Lima, Peru.

Explanation:

Lima is the capital of Peru, as well as the largest city in the country. The city, which corresponds to the province of Lima, has approximately 8,500,000 inhabitants, while the entire metropolitan area, including the port city of Callao, has more than 9,500,000 inhabitants.

Lima is located in the middle of the country on the coastal area between the Pacific and the Andes on the Rimac river. It is the country's administrative and economic center and the largest industrial city.