Aguadilla–Isabela–San Sebastián metropolitan area
The Aguadilla-Isabela-San Sebastián Metropolitan Statistical Area is a United States Census Bureau defined Metropolitan Statistical Area (MSA) in northwestern Puerto Rico. A July 1, 2009 Census Bureau estimate placed the population at 342,495, a 9.56% increase over the 2000 census figure of 312,602.
Aguadilla-Isabela-San Sebastián is the second largest metropolitan area (by population) in Puerto Rico after San Juan–Caguas–Guaynabo and is the fastest growing MSA in the Commonwealth.
- Aguadilla—Principal City
- Isabela—Principal City
- San Sebastián—Principal City
- "Table 3. Annual Estimates of the Population of Metropolitan and Micropolitan Statistical Areas in Puerto Rico: April 1, 2000 to July 1, 2009 (CBSA-EST2009-03)" (CSV). 2009 Population Estimates. United States Census Bureau, Population Division. 2010-03-23. Retrieved 2010-03-31.
- "Update of Statistical Area Definitions and Guidance on Their Uses (OMB Bulletin 08 - 01)" (PDF). 2007 Population Estimates. United States Census Bureau, Population Division. 2007-11-20. Archived (PDF) from the original on 17 November 2008. Retrieved 2008-11-10.