What is the largest city in Puerto Rico?
San Juan zona urbana is the largest city in Puerto Rico with a population of 320,691, according to Census ACS 5-Year. Bayamón zona urbana is second with 167,312.
Context
Puerto Rico has 28 tracked cities of 10,000+ residents. The largest cities serve as economic and cultural centers, often with higher incomes and more diverse populations than surrounding rural areas.
Top 10
| San Juan zona urbana | 320,691 |
| Bayamón zona urbana | 167,312 |
| Carolina zona urbana | 139,051 |
| Ponce zona urbana | 109,765 |
| Caguas zona urbana | 72,862 |
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Frequently Asked Questions
San Juan zona urbana is the largest city in Puerto Rico with a population of 320,691, according to Census ACS 5-Year. Bayamón zona urbana is second with 167,312.
Source: U.S. Census Bureau ACS, 2026.