No, you can’t set foot on the island—so your curiosity becomes part of the experience. Morgan Island, just off the coast of Beaufort, South Carolina, is more famously known as “Monkey Island” thanks to a roaming colony of thousands of rhesus monkeys that live there.
What makes this even more intriguing is the back-story: in 1979–80 more than 1,400 monkeys were relocated from Puerto Rico for research purposes, and over decades the colony has grown while the island remains off-limits to the general public.
So in many ways the mystery and exclusivity add to its appeal: if you approach by boat or from the water, you’re peeking into a place that’s part nature preserve, part secret research site, and part curious attraction.
Key Highlights
One of the most remarkable things about Morgan Island is the size and scale of the monkey colony. Estimates show roughly 3,500 to 4,000 free-ranging rhesus macaques roam the island in semi-wild conditions.
Another highlight is the location itself: the island is 4,489 acres of marshland, tidal creeks and upland forest, lying between the Morgan and Coosaw Rivers and extending into St. Helena Sound.
You’ll also find one of only two rhesus monkey colonies in the continental United States. The fact that this island hosts such a unique wildlife population makes it unusually special for visitors, even if only from a distance.
On the other hand, the “visitability” of Morgan Island is limited—but that limitation itself becomes part of the charm. Many local boat tours will take you out so you can view the island’s shoreline and get glimpses of monkeys in the trees or along the banks.
Atmosphere & Décor
If you imagine an island primarily frequented by humans, Morgan Island is decidedly different. The atmosphere is one of wild, low-country forest and marsh, interrupted by the chattering of monkeys instead of picnic tables. The island feels remote and protected, and that sense of separation from the mainstream tourist track gives it a slightly other-worldly feel.
Visually, imagine dense maritime forests, tidal creek edges, and monkeys perched on branches or foraging in the undergrowth. From a boat or distant vantage point you might see a sign on the island’s edge warning “No Trespassing” or “Do Not Feed or Approach the Animals”—that adds a layer of suspense and intrigue.
Because access is restricted, most of your “scenery” is via waterway: slow-moving creeks, open salt marshes, and the occasional monkey on a sand bank. It’s quiet, slightly edgy, and definitely different from a standard tourist site.
Other Considerations
So how’s the cost? If you join a boat tour that passes by Morgan Island, the cost is standard for a wildlife or estuary tour in the Lowcountry region. While the island itself is not a paid attraction, expect to pay for the boat trip.
What about access & parking? You can’t dock on Morgan Island or explore on foot legally. Access is strictly by boat via tour providers. So your logistics hinge on booking a tour from nearby waterways (e.g., Beaufort, St. Helena Island).
Are there caveats? Yes. Because the island is restricted and its primary purpose is wildlife management and research, you won’t find visitor amenities, open trails, or traditional signage. Your experience is more “look from a distance” than “walk in and explore.” Also, the research aspect has drawn controversy about animal welfare and transparency.
Best time to view: Early morning or late afternoon boat tours often offer the best light and chances of spotting monkeys near the shore. Calm tidal conditions and less boat traffic help with clear sightings.
Morgan Island
📍 St. Helena Sound, Beaufort County, SC
