Juncal's 2026 population is now estimated at 994. In 2000, the population of Juncal was 1,155. These population values and projections come from U.S. Census decennial place populations for Puerto Rico (2000, 2010, 2020) and World Population Review Internal Projections .
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| San Juan | 291,890 | -1.67% |
| Bayamón | 154,106 | -1.17% |
| Carolina | 127,767 | -1.31% |
| Ponce | 95,462 | -2.03% |
| Guaynabo | 64,631 | -0.96% |
| Caguas | 64,010 | -1.55% |
| Mayagüez | 50,991 | -2% |
| Trujillo Alto | 41,101 | -1.02% |
| Arecibo | 37,129 | -1.08% |
| Fajardo | 23,098 | -1.4% |
| Vega Baja | 22,037 | -1.01% |
| Cataño | 20,599 | -1.93% |
| Guayama | 16,789 | -1.86% |
| Canóvanas | 16,121 | 5.08% |
| Candelaria | 13,532 | -1.33% |
| Humacao | 13,132 | -2.16% |
| Cayey | 12,602 | -1.74% |
| Yauco | 11,775 | -2.34% |
| Dorado | 11,564 | -0.85% |
| Hormigueros | 10,323 | -1.16% |