Chincha Alta is a Peruvian city located in the Ica Region. A major port at the mouth of the Chincha River, it is the capital of Chincha Province. …Chincha Alta is a Peruvian city located in the Ica Region. A major port at the mouth of the Chincha River, it is the capital of Chincha Province. The city has a population of about 233,000, making it the 17th largest city in Peru.