Biñan (), officially the City of Biñan (), is a 1st class component city in the province of Laguna, Philippines. According to the 2020 census, it has a population of 407,437 people. Biñan, also known as Biniang, has become both a suburban residential community of Metro Manila and a location for some of the Philippines' largest industrial estates and export processing zones. Prior to its cityhood in 2010, Biñan was the richest municipality in the Philippines with an annual gross income of ₱677 million (US$14.383 million) and net income of ₱250 million (US$5.308 million), as of 2007 by the Commission On Audit. According to the 2020 census, it has a population of 407,437, making it the third largest in population in the province of Laguna, after Calamba and Santa Rosa. By virtue of Republic Act 10658, signed on March 27, 2015, by President Benigno Aquino III, Biñan has been separated from the First Congressional District of Laguna and formed the Lone Congressional District of Biñan. The first representative, the former mayor of the city, has been elected during the 2016 elections, unopposed. Etymology Where Biñan got its name is a mystery. Some deduced that before Captain Juan de Salcedo proceeded to Cainta and Taytay finally reaching Bay, he landed in Biñan. According to the story, Padres Alfonso de Alvarado and Diego Espinar planted a huge wooden cross on the spot where the present-day San Isidro Labrador parish stands and co-celebrated a Thanksgiving Mass. Curious natives gathered and the two Spanish missionaries took advantage of the situation. They baptized each one of them. From then on, old folks say they called the place “Binyagan,” which means a baptismal place. The Spanish tongue's difficulty in pronouncing the local dialect acquired for the once town its name— "Biñan". History Captain Juan de Salcedo discovered and founded Biñan at the end of June 1571, a month after Miguel López de Legazpi established Manila when he explored the largest freshwater lake in the Philippines and second in Asia (Laguna de Bay). When the seat of the provincial government of the Provincia de la Laguna de Bay was moved from Bay to Pagsanjan in 1688, Biñan separated from Tabuco (now the city of Cabuyao). In 1791, during the time of Pablo Faustino, Santa Rosa separated from Biñan. The following year, January 15 Sta Rosa de Lima was established and became an independent town. Historically, Biñan is