Sewall's Point — One of Florida's Wealthiest Small Towns, With a Real Water-Quality Problem Attached

What Sewall's Point Actually Is

Sewall's Point is a small, incorporated town in Martin County, Florida, occupying a narrow peninsula that separates the St. Lucie River from the Indian River Lagoon, close to where the two meet at the St. Lucie Inlet. It takes its name from Captain Henry Edwin Sewall, and the Town of Sewall's Point received its official charter on June 12, 1957, after a Sewall's Point Association formed in the early 1950s specifically to gain local control over zoning on the peninsula -- a founding purpose that still shapes the town today, since it remains strictly residential with no commercial development allowed within town limits. At the 2020 Census, the town's population was 1,991, spread across a total area of 4.1 square miles, of which only about 1.2 square miles is land -- the remaining roughly 71% is water, a genuinely unusual land-to-water ratio that says more about what this town actually is than almost any other single fact.

Geographically, the most important correction to make before treating Sewall's Point like an oceanfront beach town is this: it isn't one. There is no public Atlantic beachfront inside town limits. The peninsula runs roughly 3.5 miles long and averages about a third of a mile wide, bordered by the St. Lucie River's North and South Forks to the west and south and the Indian River Lagoon to the east, with unincorporated Jensen Beach bordering the town to the north. Ocean access is real but indirect -- by boat, through the St. Lucie Inlet a short run away, or by a short drive across to the barrier-island beaches of Hutchinson Island. That distinction matters enormously for how this page frames flood and storm risk: this is a river-and-lagoon flood profile tied to rainfall, lake discharges, and tidal surge funneled up two waterways, not a direct-wave, oceanfront-erosion story the way it would be on Hutchinson Island or Jupiter Island just to the south.

What Sewall's Point unambiguously is: one of Martin County's, and Florida's, more affluent small residential towns. Local real estate coverage groups Sewall's Point with neighboring Jupiter Island as holding the county's "old-money waterfront," and the numbers back that framing up -- 2022 per-capita income data put the town at roughly $95,187, which works out to an equivalent household income of around $380,748 for a family of four, well above both Florida and national norms. That wealth shows up physically in large, canopy-lined lots, estate-scaled homes, and, above all, water: nearly every residential parcel here either fronts the St. Lucie River, the Indian River Lagoon, or a canal feeding one of them, and the town's own Port Sewall marina -- roughly 1.2 miles above where the St. Lucie River meets the Intracoastal Waterway -- offers berths, wet storage, and a 50-ton lift for hull, engine, and electronics work. Add Martin County's broader identity as a serious boating and sportfishing region -- Stuart, just across the river, markets itself as the "Sailfish Capital of the World" thanks to the nearby Gulf Stream -- and the dual-river peninsula geography that looks like a liability on a flood map reads, for the right buyer, as the entire point of living here.

What Living Here Is Actually Like

Because Sewall's Point is zoned strictly residential with no commercial development, there is no in-town retail strip, restaurant row, or grocery store to speak of -- daily errands, dining, and shopping happen a short drive away across the river in downtown Stuart, which has a genuinely well-regarded historic waterfront district, or north toward Jensen Beach. That tradeoff is the town's whole identity: buyers choose Sewall's Point specifically to trade walkable commercial amenities for privacy, large lots, and direct water access, not despite that tradeoff but because of it. The town's own boating infrastructure -- the Port Sewall marina with its wet storage, service lift, and Intracoastal proximity -- and Martin County's broader network of paddling trails across the Indian River Lagoon and St. Lucie River systems (roughly 37.7 miles of mapped trails countywide) give a sense of what day-to-day recreation here actually looks like: it is a boat-first, water-first town.

For dining, shopping, and a fuller range of everyday services, residents cross the river into Stuart or drive to nearby Jensen Beach and Palm City, which this page does not attempt to cover in the same depth as a dedicated Stuart or Jensen Beach guide would -- see the compare-markets list in the sidebar for those neighboring towns as they come online. What this page focuses on instead, deliberately, is the two things that most differentiate a Sewall's Point purchase from a purchase in a similarly priced Florida beach town: the real cost structure of owning waterfront property on this specific peninsula, and the real, sourced water-quality and storm risk tied to its two-river geography -- both covered in full on the linked pages below.