Pulilan is a first class urban municipality in the province of Bulacan, Philippines. According to the 2010 census, it has a population of 85,844 inhabitants. The town is famous for its Carabao Festival where Carabaos are paraded and kneel as they pass through San Isidro Labrador parish church, in honor to the town's patron saint, San Isidro Labrador.
With the continuous expansion of Metro Manila, the municipality is now included in Manila built up area which reaches San Ildefonso in its Northernmost part.
Pulilan is one of the 21 towns of Bulacan province, located in about its center—from north to south. It has an area of about 4,073 hectares. It is bounded on the north by Apalit in Pampanga; on the east by Baliuag; on the south by Plaridel; and on the west by Calumpit. The Angat River cutting its way through the eastern edge of Baliuag, and the southern fringes of Pulilan down to the tributary of Manila Bay southwest of Calumpit, serves as the boundary with Plaridel. Its feature is flat and the soil is suited to farming.
The ancient town of Pulilan was first documented as Puliran in the Laguna Copperplate Inscription, a pre-colonial Philippine document written in 900 AD. The native population of Puliran at the time of the document were ruled by the sovereign Lord Ka-Sumuran (see Laguna Copperplate Inscription). There is no documentation found referring to Pulilan for the period between 900 AD to the Spanish arrival in the region in 1571.
An Augustinian friar, Fray Vicente Villamanzo, was made to declare the settlement a town on January 20, 1796. It was assigned a patron saint, San Isidro Labrador, after whose name he wanted the town identified.
From the time the nation acquired its Independence, the inhabitants of Pulilan have committed themselves in a determined effort to improve their lot. The influence of Spanish, American and Japanese occupations, have in a measure, contributed to the promotion of their welfare. But the Pulilenos, as they are known, treasure their great heritage.
San Isidro Labrador or saint Isidore the Laborer, the patron saint of farmers, is the patron saint of the town as well. The traditional date of his liturgical feast, which, though not included in the General Roman Calendar has been celebrated for centuries in several countries and dioceses, is May 15. However, it is in the 14th day of May that Pulileňos(people of Pulilan) celebrate the feast in honor of their saint by parading carabaos and making them kneel in front of the church as a sign of respect for the patron saint of farmers. Also included in the parade are cows, horses, street folk dancers, marching bands and floats of commercial establishments of the town. On May 14, 2009, the town called attention when one of the water buffalos (which was known to be biologically enhanced) raged and caused so many destructions in the town proper. no one get hurt but the waiting shed was destroyed. However, the buffalo was captured and calmed.