St. Just, Trujillo Alto, Puerto Rico

St. Just is a barrio in the municipality of Trujillo Alto, Puerto Rico. A newer barrio, its population is counted starting with the 2000 Census, and in 2010 was 14,635.

A newer barrio of Trujillo Alto, it was established in 1990. The barrio is named after an Infantry Captain of the Spanish army, Federico Saint Just, who in 1818 and by royal decree was granted a large swath of land belonging to barrio Cuevas in Trujillo Alto.