Gulf Coast States by Population: The Ranking Might Surprise You

The five U.S. states bordering the Gulf of Mexico, ranked by population (2023 estimates), reveal a clear hierarchy dominated by two giants:

1. Texas — ~30.5 million (2nd largest in US)
2. Florida — ~22.6 million (3rd largest in US)
3. Alabama — ~5.1 million
4. Louisiana — ~4.6 million
5. Mississippi — ~2.9 million

Key Observations

• Texas > Florida: Despite Florida's longer Gulf coastline, Texas's massive overall population (driven by diverse economy, multiple metros) edges it out.
• The "Big Two" dominate: Texas + Florida = ~53 million = 91% of the 5-state Gulf population.
• Alabama vs. Louisiana: Alabama recently surpassed Louisiana due to stronger growth (Huntsville, Birmingham, auto manufacturing) vs. Louisiana's outmigration/post-Katrina/energy volatility.
• Mississippi: Smallest, slowest growing; relies on Gulf tourism (casinos), shipbuilding (Ingalls), agriculture.

Coastal vs. Total Population

These are *total state* populations. The *coastal county* populations are a fraction (e.g., Harris County/Houston is inland; Miami-Dade is Atlantic). But the Gulf drives major metros: Houston (Galveston Bay), Tampa Bay, Mobile, New Orleans (Lake Pontchartrain/Gulf), Gulfport-Biloxi.

Why It Matters

Population drives political representation (House seats, Electoral College), federal disaster funding formulas, market size for Gulf industries (energy, shipping, tourism, fisheries), and environmental pressure on the shared ecosystem.