Dauphin Island is 14 miles long and averages 1.75 miles wide at its widest point, covering approximately 16 square miles (6.5 square miles of land, remainder is water/marsh). You can drive from end to end in 20 minutes, bike the length in about an hour, and explore the entire island thoroughly in 2-3 days.
Physical Dimensions
- Length: 14 miles (east to west)
- Width: 0.25 to 1.75 miles (varies)
- Land area: 6.5 square miles
- Total area: 16 square miles (including water)
- Coastline: 16+ miles of beaches
Getting Around
- Drive end-to-end: 20 minutes
- Bike the island: 1-2 hours
- Walk the length: 4-5 hours
- Explore everything: 2-3 days
Population
- Year-round residents: 1,200-1,300
- Summer peak: 3,000-4,000 (includes visitors)
- Housing units: Approximately 1,800 (many are vacation rentals)
- Population density: 185 people per square mile (very low)
The island’s small size is its charm – everything is close, traffic is minimal, and you can’t really get lost.