In its first year, Hatillo had 910 people; increasing to 2,663 inhabitants the following year distributed among the central town and the barrios of Carrizales, Capáez, Naranjito, Corcovado, Buena Vista, (formerly Yeguada Occidental), Campo Alegre, (formerly Yeguada Oriental), Pajuil, Bayaney, Aibonito, and Barrio Pueblo. Barrio Pajuil had disappeared by the 1940 census being divided up between Buena Vista, Naranjito, Corcovado and Campo Alegre barrios. There were also two sugarcane plantations named “Hacienda Santa Rosa” measuring 150 and “Hacienda Perseverancia” at 50 .