- Laguna Madre Area Empowerment Sub-Zone - The Cameron County portion of the zone includes Port Isabel, the Port Isabel-San Benito Navigation District, Laguna Heights, Laguna Vista, and a portion of Bayview, including the Cameron County Airport.
www.portisabel.org/ecodev.html
- Port Isabel -TX- Chamber of Commerce - The Port Isabel, Texas Chamber of Commerce offers Rio Grande Valley history on the border with Mexico, on the Laguna Madre (bay), at the tropical tip of Texas and the Gulf of Mexico.
www.portisabel.org/index.html
- Texas Community Profiles, Texas Communities - Texas Department of Economic Development - Port Isabel, Texas demographics.
community.tded.state.tx.us/communities/commpages/286.htm
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