first is san pablo city, the city of calamba, is one of the fastest growth city in region 4a, and it growth population, which divided into barangays, because of its economic some, commercials, entertainment, factory companies and others, are served in city, calamba city is south of manila. calamba city is a popular tourist destination. it has several hot spring resorts. most of these are in barangay pansol. there are 651 resorts and hot springs in the city. the canlubang golf and country club has been the host of many philippine opens. calamba is also an important modern industrial center in the calabarzon region. this is shown by the large number of industrial parks and business estates in the city. 454,486 people live in the city (2015). there are in 58,466 households. calamba city is the most populated city in laguna province. san pedro, santa rosa city, biñan city, and san pablo city follow it as the top 5 municipalities and cities by number of people in the province.