| Official Name: | Primero |
| Native Name Lang: | es |
| Settlement Type: | Barrio |
| Pushpin Map: | Caribbean |
| Pushpin Map Caption: | Location of Puerto Rico |
| Coordinates: | 18.0079°N -66.6195°W |
| Coordinates Footnotes: | [1] |
| Subdivision Type: | Commonwealth |
| Subdivision Name: |  Puerto Rico |
| Subdivision Type1: | Municipality |
| Subdivision Name1: | Ponce |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 0.26 |
| Area Land Sq Mi: | 0.26 |
| Area Water Sq Mi: | 0 |
| Population As Of: | 2010 |
| Population Note: | Source: 2010 Census |
| Population Total: | 3175 |
| Population Density Sq Mi: | 12211.5 |
| Timezone: | AST |
| Utc Offset: | -4 |
| Elevation Ft: | 33 |
Primero (Barrio Primero) is one of the 31 barrios of the municipality of Ponce, Puerto Rico. Together with Segundo, Tercero, Cuarto, Quinto, and Sexto, Primero is one of the municipality's original six core urban barrios. It was founded in 1878.[2]
Primero is an urban barrio located in the southern section of the municipality, within the Ponce city limits, and southwest of the traditional center of the city, Plaza Las Delicias.
Barrio Primero is bounded on the North by Villa Street, on the South by Ferrocarril and Dr. Ferran Streets, on the West by PR-2R (Carretera Pámpanos / Calle Coto Canas), and on the East by Eugenio Maria de Hostos Avenue and Marina Street.[3]
In terms of barrio-to-barrio boundaries, Primero is bounded in the North by Barrio Segundo, in the South by Canas Urbano, in the West by Barrio Canas Urbano, and in the East by Barrio Cuarto. The communities of Ponce de Leon, Los Maestros, Mariani, and Pedro J. Rosaly are located in Barrio Primero.
Primero has 0.25sqmi of land area and no water area.[4] In 2000, the population of Primero was 3,550. The population density in Primero was 13,997 persons per square mile.[5] [4]
In 2010, the population of Primero was 3,175 persons, and it had a density of 12,211.5 persons per square mile.[6]
Primero is home to Ponce City Hall on its northeastern end.The Dora Colón Clavell Urban Park, is also found in Barrio Primero. The historic, NRHP-listed, Rosaly-Batiz House, Residencia Zaldo de Nebot on 27 Marina Street, and the Missionary Society of the Methodist Episcopal Church on 132 Villa Street, are also in Barrio Primero.