What is the youngest city in Puerto Rico?
Guayama zona urbana has the lowest median age among Puerto Rico's tracked cities at 40.0 years, per Census ACS 5-Year estimates.
Context
Cities with the youngest populations are typically anchored by universities, military bases, or fast-growing residential developments attracting young families.
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Frequently Asked Questions
Guayama zona urbana has the lowest median age among Puerto Rico's tracked cities at 40.0 years, per Census ACS 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.