San Juan Municipio's 2026 population is estimated at 320,283, reflecting a -1.29% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). San Juan Municipio is the largest county in Puerto Rico. The 2010 population was 394,235 and has grown -18.76% since 2010.
Data after 2023 is projected based on recent change
Overall: 45.8 years
Female: 48 years
Male: 43.4 years
There are 284,773 adults, (85,589 of whom are seniors) in San Juan Municipio.
Female: 182,566 (54.3%)
Male: 153,594 (45.7%)
The racial composition of San Juan Municipio includes 29.63% other race, 23.11% White, 9.93% Black or African American, and smaller percentages for Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| Two or more races | 123,887 | 36.85% |
| Other race | 99,591 | 29.63% |
| White | 77,702 | 23.11% |
| Black or African American | 33,372 | 9.93% |
| Native American | 906 | 0.27% |
| Asian | 683 | 0.2% |
| Native Hawaiian or Pacific Islander | 19 | 0.01% |
San Juan Municipio 's average per capita income is $25,996. Household income levels show a median of $27,992. The poverty rate stands at 38.84%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $61,905 | - |
| Families | $37,346 | $68,473 |
| Households | $27,992 | $53,654 |
| Non Families | $20,293 | $36,155 |
Average Income
Median Household Income
Poverty Rate