', officially the ', is a of the Philippines in the province of,. According to the, it has a population of people..As the most populated city in Pangasinan and the entire Ilocos Region, it is situated in the central plains of the very heart of Pangasinan, its nearby neighbors are Lingayen, Binmaley, Calasiao, Santa Barbara, Malasiqui, Bayambang, Mangatarem, Urbiztondo and Aguilar with bordering Bugallon and Basista.HistoryPrecolonial timesSan Carlos City was once known as Binalatongan and is the capital of the Huangdom of Pangasinan, which also includes the present-day towns of Northern Tarlac, La Union, Benguet, Zambales, Nueva Ecija and Nueva Vizcaya. During that time, Pangasinan traded with Japan, China and other Southeast Asian empires and national entities and enjoyed full independence and prosperity.Case UnclosedMurder charges were filed against Angelito Soriano, Cesar de Guzman and 2 John Does on May 2, 2007, for the April 28, 2007, 10:15 p.m. assassination of San Carlos City Mayor Julian Resuello and his civilian aide inside the city plaza as he was shaking hands with the audience at the city plaza during the coronation night for the city fiesta queen during a fiesta ball.