Gulf of Mexico vs. Gulf of Maine: Size Comparison

The Gulf of Mexico is vastly larger than the Gulf of Maine.

• Gulf of Mexico: ~1.6 million km² (615,000 sq mi)
• Gulf of Maine: ~94,000 km² (36,000 sq mi)

The Gulf of Mexico is roughly 17 times larger in surface area. It borders five U.S. states, Mexico, and Cuba, while the Gulf of Maine is a smaller Atlantic embayment touching Massachusetts, New Hampshire, Maine, New Brunswick, and Nova Scotia.