Dogs are usually allowed on the islands, but leashes are almost always required.

Yes, most public islands (state parks, national recreation areas, etc.) allow dogs. And yes, they typically need to be on a leash no longer than six feet.

The exceptions are few: service dogs are always allowed. Some islands with sensitive wildlife (bird nesting areas, seal haul-outs) ban dogs entirely during certain seasons. But for your average island hike or beach walk, bring the dog, bring the leash.

Check the specific park or island website before you go—it’s usually a five-second search. Don’t be the person who gets a ticket because you assumed off-leash was fine.