Aguas Blancas is a barrio in the municipality of Yauco, Puerto Rico.

[3][4][5] Aguas Blancas was in Spain's gazetteers[6] 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.

[7] 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.

[8] It is partially located in the boundary with the Duey and Sierra Alta barrios.