| San Mateo | |
| Settlement Type: | Subbarrio |
| Map Alt: | Map showing the location of San Mateo within the barrio of Santurce |
| Coordinates: | 18.4458°N -66.0642°W |
| Subdivision Type: | Commonwealth |
| Subdivision Name: |  Puerto Rico |
| Subdivision Type1: | Municipality |
| Subdivision Name1: | San Juan |
| Subdivision Type2: | Barrio |
| Subdivision Name2: | Santurce |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | .07 |
| Area Land Sq Mi: | .07 |
| Population As Of: | 2010 |
| Population Note: | Source: 2010 Census |
| Population Total: | 1549 |
| Population Density Sq Mi: | 22128.6 |
| Timezone: | AST |
| Utc Offset: | -4 |
| Elevation Ft: | 66 |
| Postal Code Type: | Zip code |
San Mateo is one of the forty subbarrios of Santurce, San Juan, Puerto Rico.
In 2000, San Mateo had a population of 1,989.[1]
In 2010, San Mateo had a population of 1,549 and a population density of 22,128.6 persons per square mile.[2]
The historic Church of San Mateo de Cangrejos of Santurce is in San Mateo, at Calle San Jorge and Calle San Mateo (one block from Avenida Juan Ponce de León).[3]