| Official Name: | San Antón |
| Settlement Type: | Barrio |
| Pushpin Map: | Caribbean |
| Pushpin Map Caption: | Location of Puerto Rico |
| Coordinates: | 18.3876°N -65.9929°W |
| Coordinates Footnotes: | [1] |
| Subdivision Type: | Commonwealth |
| Subdivision Name: |  Puerto Rico |
| Subdivision Type1: | Municipality |
| Subdivision Name1: | Carolina |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 1.91 |
| Area Land Sq Mi: | 1.91 |
| Area Water Sq Mi: | 0 |
| Elevation Ft: | 266 |
| Population Total: | 13578 |
| Population As Of: | 2010 |
| Population Density Sq Mi: | 7146.3 |
| Population Note: | Source: 2010 Census |
| Timezone: | AST |
| Utc Offset: | -4 |
| Postal Code Type: | ZIP Code |
San Antón is a barrio in the municipality of Carolina, Puerto Rico. Its population in 2010 was 13,578.[2] [3] [4]
San Antón was in Spain's gazetteers[5] until 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 an unincorporated territory of the United States. In 1899, the United States Department of War conducted a census of Puerto Rico finding that the population of San Antonio barrio (as it was called then) was 615.[6]
San Antón saw a 21.7% increase in population from 1990 to 2000 and a 29.7% increase from 2000 to 2010.