| Official Name: | Aguas Blancas |
| Settlement Type: | Barrio |
| Pushpin Map: | Caribbean |
| Pushpin Map Caption: | Location of Puerto Rico |
| Coordinates: | 18.1271°N -66.8253°W |
| Coordinates Footnotes: | [1] |
| Subdivision Type: | Commonwealth |
| Subdivision Name: |  Puerto Rico |
| Subdivision Type1: | Municipality |
| Subdivision Name1: | Yauco |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 4.7 |
| Area Land Sq Mi: | 4.7 |
| Area Water Sq Mi: | 0 |
| Population As Of: | 2010 |
| Population Note: | Source: 2010 Census |
| Population Total: | 231 |
| Population Density Sq Mi: | 49.1 |
| Timezone: | AST |
| Utc Offset: | -4 |
| Elevation Ft: | 2297 |
| Postal Code Type: | ZIP Code |
Aguas Blancas is a barrio in the municipality of Yauco, Puerto Rico. Its population in 2010 was 231.[2] [3] [4]
Aguas Blancas 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 Aguas Blancas barrio was 1,170.[6]
Aguas Blancas is located in the Cordillera Central in northern Yauco, and the highest point of the municipality, at 2,864 ft (873 m) above sea level,[7] is partially located in the boundary with the Duey and Sierra Alta barrios.[8] Duey River also runs through and originates in this barrio.[9]