Verified · October 2026
Town of Jupiter Island, Martin County (ZIP 33455); island's southern tip in Palm Beach County
Entry price range: $5M to $45M+
Every claim below links to a dated public source.
The community in brief
Jupiter Island at a glance.
Jupiter Island is a roughly nine-mile barrier island split between Martin County to the north and Palm Beach County to the south, bounded by the Atlantic Ocean on the east, the St. Lucie Inlet on the north, the Indian River (Intracoastal Waterway) on the west, and Jupiter Inlet on the south. The incorporated Town of Jupiter Island, established in 1953, covers the island's northern portion in Martin County with about 1,643 acres and roughly 800 to 820 full-time residents, using Hobe Sound's 33455 ZIP. It is one of the most expensive residential addresses in the United States, its estate market built on low density, ocean frontage, and absolute privacy.
Real-time availability is confirmed directly with Kelby: listings portals lag, and the best addresses in Jupiter Island move before they are published.
Location & boundaries
From the St. Lucie Inlet to the Jupiter Inlet
The island runs from the St. Lucie Inlet and Hobe Sound National Wildlife Refuge on the north down to the Jupiter Inlet on the south, with the Atlantic on one side and the Indian River lagoon on the other. The Town of Jupiter Island occupies the northern section in Martin County; the island's southern tip, in Palm Beach County, holds the separate small town of Jupiter Inlet Colony. The island is reached by the Hobe Sound Bridge on Bridge Road (County Road 708) and, from the south, by Beach Road from the Tequesta bridge.
Sources · verified October 2026
Architecture & character
Low density, ocean frontage, and deliberate quiet
The town is zoned to stay low and leafy: wide oceanfront lots, mature landscaping and native coastal vegetation, private paths to the beach, and almost no commercial life on the island itself. Residences range from classic old-Florida beach houses to modern estates, all under deceptively simple gates. Roughly 9 miles of ocean frontage with a permanent population near 800 means neighbors stay few and known, and the Hobe Sound National Wildlife Refuge protects the island's northern reach.
Sources · verified October 2026
Market positioning & pricing
Entry in the $5Ms, listings averaging ~$12.9M
Active listings and closed data, mid-2026
The estate market is consistently among the nation's most expensive. Recent figures put active inventory at roughly 26 listings averaging about $12.9 million with a top asking price near $45 million, a median listing price around $12.7 million, and a median sale price of about $6.9 million over the three months ending July 2026. Listings typically range from about $5 million to $45 million. These are dated asking and closed figures, not guarantees; confirm the current market with Kelby.
Sources · verified October 2026
Amenities
Beach paths, the lagoon, and club life a bridge away
- Private beach access paths from residential streets
- The Indian River lagoon for boating, fishing, and kayaking on the west side
- Proximity to the Hobe Sound National Wildlife Refuge and Blowing Rocks Preserve nearby
- Golf and yacht clubs on the mainland a short drive across the bridges
- Deliberately minimal commercial life on the island itself
Sources · verified October 2026
Schools
Martin County schools, assigned by address
The Town of Jupiter Island sits in Martin County and is served by the Martin County School District, with the island's Palm Beach County tip under The School District of Palm Beach County. Assignments are per address in both districts, so verify current boundaries with the applicable district before relying on any zone.
School boundaries change and are set by address, never by community name: verify current boundaries with The School District of Palm Beach County before relying on any assignment.
Sources · verified October 2026
Access & commute
Bridge Road and Beach Road; I-95 a bridge-and-highway run west
The island is reached from the mainland via the Hobe Sound Bridge on Bridge Road (CR 708) and from the south via Beach Road from the Tequesta bridge. US-1 and I-95 run parallel on the mainland a short drive west, and Palm Beach International Airport is roughly a 35-minute drive south in light traffic.
Sources · verified October 2026
HOA, club & restrictions
Town zoning does the gatekeeping
Jupiter Island's estate character is enforced primarily through the town's own low-density zoning rather than a residential HOA. Specific lot-level covenants, dues, and building restrictions were not itemized in this research and read Contact for current information; Kelby will review them with you for any property you shortlist.
Sources · verified October 2026
Waterfront, flood zone & insurance
Oceanfront ground is high-hazard by definition
Nearly the entire island sits within FEMA-mapped coastal high-hazard zones, and storm surge, wind, and flood insurance are existential parts of ownership here. Premiums vary dramatically with elevation, construction type, and flood history. Verify each property with FEMA's Flood Map Service Center and an insurer experienced with barrier-island risk before offering.
Sources · verified October 2026
New construction & pre-construction
Estate rebuilds define the building market
Unverified
The island is fully built out; new construction means teardown-and-rebuild estate projects subject to the town's design review. Current rebuild activity and pricing were not verified in this research; confirm directly with Kelby.
Sources · verified October 2026
Investment & rental considerations
A thin, trophy market
Jupiter Island inventory is thin by design and trades to trophy and legacy buyers rather than yield-driven investors; rental activity is limited and town-regulated. At these price points every transaction is property-specific. No rental or yield figures were verified; underwrite the specific estate with Kelby.
Sources · verified October 2026
Frequently asked questions
Straight answers about Jupiter Island.
Where is Jupiter Island, and who owns it municipally?
The nine-mile barrier island runs from the St. Lucie Inlet south to the Jupiter Inlet. The Town of Jupiter Island, incorporated in 1953, occupies the northern portion in Martin County; the island's southern tip in Palm Beach County is the separate town of Jupiter Inlet Colony.
How expensive is Jupiter Island?
Mid-2026 data shows listings averaging about $12.9 million with a top asking price near $45 million and a median sale near $6.9 million. Listings typically range from about $5 million to $45 million. Confirm the current market with Kelby.
Is the town of Jupiter Island the same as Jupiter?
No. The Town of Jupiter Island is a separate, much smaller municipality in Martin County on the barrier island; Jupiter is a larger town on the mainland in Palm Beach County, several miles south.
What schools serve Jupiter Island?
The island's town is in Martin County, so Martin County School District assignments apply by address; the island's Palm Beach County tip falls under Palm Beach County schools. Verify boundaries with the applicable district.
Nearby communities
Compare Jupiter Island with the communities around it.
Provenance
Information reviewed October 2026.
Every claim on this page is drawn from public research and linked to its dated source below. Figures such as asking prices, dues, and school assignments change; where a field could not be verified it reads “Contact for current information” and the answer is one call away. Nothing on this page is a guarantee of price, availability, or school assignment.
- Source
Jupiter Island barrier island Wikipedia
Island geography and boundaries
- Source
Jupiter Island, Florida Wikipedia
Town history, size, and population
- Source
Town of Jupiter Island community profile
Acreage, ocean frontage, and character
- Source
Frankel Ball Jupiter Island
Active listing average and top price
- Source
Redfin Jupiter Island housing market
Median sale price, 2026
- Source
Bex Realty Jupiter Island
Listing range
Each source above verified October 2026
Interested in Jupiter Island?
Get the current Jupiter Island read from Kelby.
Current inventory, entry pricing, fee schedules, and the honest verdict on whether the community fits your plan. Send your criteria and Kelby replies personally, usually within one business day.
Ask about Jupiter Island
Include budget, timing, and whether you are buying or selling.