Map - Loíza, Puerto Rico (Loíza Municipio)

Loíza (Spanish pronunciation: ) is a town and municipality on the northeastern coast of Puerto Rico, north of Canóvanas; east of Carolina, Puerto Rico; and west of Río Grande, Puerto Rico. Loíza is spread over five barrios and Loíza Pueblo (the downtown area and the administrative center of the city). It is part of the San Juan-Caguas-Guaynabo Metropolitan Statistical Area. It is renowned for its rich Afro-Puerto Rican culture and heritage.

Some say its name comes from a female cacique, named Loaíza or Yuíza, who governed the region formerly called Jaymanío, on the shores of the Río Grande de Loíza. It is said that this cacique might have married a mulatto conquistador called Pedro Mejías, but there is no evidence of this. Other sources point to a Spanish landlord named Iñigo López de Cervantes y Loayza, who owned a lot of the territory, and was renowned among governors and colonists of the time.

In 1692, Loíza was officially declared an urban area due to its population (100 houses and 1,146 residents), but it was in 1719 that the Spanish government declared it as an official town. It was founded by Gaspar de Arredondo.

Puerto Rico was ceded by Spain in the aftermath of the Spanish–American War under the terms of the Treaty of Paris of 1898 and became a territory of the United States. In 1899, the United States Department of War conducted a census of Puerto Rico finding that the population of Loíza was 12,522.

In the 1970s, an Aero Virgin Islands DC-3 plane crashed in a Loíza beach, with no fatalities.

On September 20, 2017 Hurricane Maria struck Puerto Rico. In Loíza, 598 residences lost their roof and 298 homes were a total loss. Loíza suffered a catastrophic hit from Hurricane Maria like the rest of Puerto Rico. In 2018, it was featured in an episode of Bar Rescue called Operation: Puerto Rico where bar consultant Jon Taffer visited Loíza to rescue an area bar and turned it into a community rescue, repairing a local community center, playground, baseball field and basketball court as well as the bar.