Guayanilla is a municipality

Municipalities of Puerto Rico

The Municipalities of Puerto Rico number 78 and they make up the smallest electoral division of the Commonwealth. Each municipality is divided into barrios, though the latter are not vested with political authority.-Administrative divisions:...

 of Puerto Rico

Puerto Rico

Puerto Rico , officially the Commonwealth of Puerto Rico , is an unincorporated territory of the United States, located in the northeastern Caribbean, east of the Dominican Republic and west of both the United States Virgin Islands and the British Virgin Islands.Puerto Rico comprises an...

 located in southern coast of the island, bordering the Caribbean Sea

Caribbean Sea

The Caribbean Sea is a sea of the Atlantic Ocean located in the tropics of the Western hemisphere. It is bounded by Mexico and Central America to the west and southwest, to the north by the Greater Antilles, and to the east by the Lesser Antilles....

, south of Adjuntas

Adjuntas, Puerto Rico

Adjuntas is a small mountainside municipality in Puerto Rico located central midwest of the island on the Central Mountain range , north of Yauco, Guayanilla and Peñuelas; southeast of Utuado; east of Lares and Yauco; and west of Ponce. Adjuntas is spread over 16 wards and Adjuntas Pueblo...

, east of Yauco

Yauco, Puerto Rico

Yauco is a city and municipality in southwestern Puerto Rico located in the southern coast of the island by the Caribbean, south of Maricao, Lares and Adjuntas; east of Sabana Grande and Guánica; and west of Guayanilla. Yauco is spread over 20 wards and Yauco Pueblo...

; and west of Peñuelas

Peñuelas, Puerto Rico

Peñuelas is a municipality in Puerto Rico located in the southern coast of the island, south of Adjuntas, east of Guayanilla, west of Ponce and north of the Caribbean Sea. Peñuelas is spread over 12 wards and Peñuelas Pueblo . It is part of the Yauco Metropolitan Statistical Area...

 and about 12 miles (20 km) west of Ponce

Ponce, Puerto Rico

Ponce is both a city and a municipality in the southern part of Puerto Rico. The city is the seat of the municipal government.The city of Ponce, the fourth most populated in Puerto Rico, and the most populated outside of the San Juan metropolitan area, is named for Juan Ponce de León y Loayza, the...

. Guayanilla is spread over 16 wards and Guayanilla Pueblo (The downtown area and the administrative center of the city). It is part of the Yauco Metropolitan Statistical Area.
Guayanilla was founded by Catalan

Catalonia

Catalonia is an autonomous community in northeastern Spain, with the official status of a "nationality" of Spain. Catalonia comprises four provinces: Barcelona, Girona, Lleida, and Tarragona. Its capital and largest city is Barcelona. Catalonia covers an area of 32,114 km² and has an...

s, Italians, Corsicans, Venezuela

Venezuela

Venezuela , officially called the Bolivarian Republic of Venezuela , is a tropical country on the northern coast of South America. It borders Colombia to the west, Guyana to the east, and Brazil to the south...

ns, and Puerto Rican criollo

Criollo (people)

The Criollo class ranked below that of the Iberian Peninsulares, the high-born permanent residence colonists born in Spain. But Criollos were higher status/rank than all other castes—people of mixed descent, Amerindians, and enslaved Africans...

s.