It is a 1st class municipality in the province of Tarlac, Philippines.

According to the latest census, it has a population of 135,213 people in 20,851 households. The 2007 Municipal Survey counted Concepcion with 133,011 of Population.

 

In 1860, the towns of Concepcion and Magalang once comprised a single town named San Bartolome (presently an abandoned town and a barangay of Concepcion) which was a military "Commandancia" of Pampanga under the Spanish regime. A great inundation devastated the whole settlement of then San Bartolome in 1863 and the people were left with no other choice but to abandon the place. It was also at this point when the people were divided as to the place where they are to resettle. Some went North and others went South. The first group headed by Don Pablo Luciano, the Governadorcillo, organized its own settlement in the slope of Mt. Arayat down South and named the settlement after him. Eventually, the place was renamed Magalang. The second group who took refuge up North comprised the Yumuls, Castros, Dizons, Pinedas, Felicianos, Aquinos, Cortezes, Bermudezes, and many others, and settled to a place (now called Sto. Nino) then occupied by the Lindos and the Amuraos (Don Esquolastiquo Amurao and Don Gaston Amurao), to be their new site. Most of the settlers became dissatisfied with the place as it abounds with snakes and was scarce in water. They moved further South to a place we now know as Concepcion. The settlers began clearing the land and built huts and roads. After several years, they named their place Concepcion, after the Immaculate Concepcion, who is believed to be miraculous and to possess power over snakes that abound the place 

 

Source:

Wikipedia.org