Historical Overview

Loíza is one of Puerto Rico's oldest municipalities, with Spanish colonial recognition dating to 1719, though Indigenous and African settlement in the region began much earlier. The town is of exceptional importance for Afro-Puerto Rican genealogical research, as it historically had one of the island's largest populations of enslaved Africans, free Black families, and their descendants. Researchers should note the town's complex jurisdictional history: Loíza was temporarily incorporated into Río Grande in 1902, restored in 1905, and in 1970 the barrio of Canóvanas was elevated to a separate municipality. Parish records for the Parroquia del Espíritu Santo y San Patricio survive from 1792, providing baptisms, marriages, and deaths for pre-civil-registration research.

Coat of Arms

Shield featuring Santiago Apóstol on horseback representing the town's traditional July 25 celebrations, a wavy band symbolizing the Río Grande de Loíza, a crown honoring Cacica Yuisa, flames of the Holy Spirit referencing the church's older religious title, and shamrocks for Saint Patrick, the parish patron.

Barrios

Genealogical records often identify individuals by barrio. Loíza has 6 barrios:

• Canóvanas
• Loíza barrio-pueblo
• Medianía Alta
• Medianía Baja
• Torrecilla Alta
• Torrecilla Baja

Daughter Municipalities

The following municipalities separated from Loíza. Residents recorded events before their founding year in Loíza's parish:

• Humacao (founded 1722) — Dulce Nombre de Jesús
• Fajardo (founded 1772) — Santiago Apóstol
• Caguas (founded 1775) — Dulce Nombre de Jesús
• Río Grande (founded 1840) — Nuestra Señora del Carmen
• Canóvanas (founded 1909) — Nuestra Señora del Pilar

Neighboring Municipalities

Also check records in neighboring municipalities:

• Carolina — San Fernando
• Canóvanas — Nuestra Señora del Pilar
• Río Grande — Nuestra Señora del Carmen

Historical Maps

Historical maps help identify barrios, boundaries, and communities as they existed in the past. Maps from the 18th and 19th centuries are preferred.

Loíza (2026)

Source: U.S. Census Bureau, TIGER/Line Shapefiles

Genealogy Toolkit

Civil Records

Began in 1885

Covers births, marriages, and deaths.

⬇ Search Civil Records

Parish Records

Parish: Espíritu Santo y San Patricio

Records from 1792

⬇ Search Catholic Records

Digital Archives

• FamilySearch: Loíza Civil and parish records
• FamilySearch: Puerto Rico Genealogy Complete records guide

Further Reading

• Loíza Parish Registers, 1792–1919 — Iglesia Católica San Patricio catalog FamilySearch catalog entry for baptisms, marriages, deaths, and indexes from the Loíza parish; many older records are deteriorated.
• Loíza Church Records Transcribed and Indexed — Genealogía Nuestra transcription Transcribed and indexed Loíza baptisms, marriages, and deaths; a derivative source — verify against original images.
• Loíza, Puerto Rico Genealogy — FamilySearch guide FamilySearch wiki page with research guidance for Loíza, including available record types and repositories.