Martin County Florida map | Stuart to Indiantown

Martin County Florida map — Martin County stretches west from Stuart and the Treasure Coast to Indiantown and the eastern edge of Lake Okeechobee. The county combines two distinctly different landscapes: a river-and-lagoon urban area in the east and a canal-and-farmland interior in the west.

This guide uses waterways and highways to explain the relative positions of Stuart, Palm City, Jensen Beach, Port Salerno, Hobe Sound, and Indiantown. One essential detail is that downtown Stuart is on the St. Lucie River estuary, not directly on an Atlantic beach; the Indian River Lagoon and barrier islands lie between the mainland city and the ocean.

Martin County Florida map showing Stuart, Palm City, Indiantown — Martin County map centered on Stuart and Palm City

Download the Martin County map

Map file: County reference map
File format: ZIP

Download the Martin County map

Table of Contents

Quick Facts

State: Florida
County: Martin County
County seat: Stuart
FIPS code: 12085
Land area: 543.82 square miles (2020 U.S. Census basis)
Incorporated municipalities: Stuart, Indiantown, Jupiter Island, Sewall’s Point, and Ocean Breeze
Prominent communities: Palm City, Jensen Beach, Hobe Sound, Port Salerno, and Rio
Major waters: St. Lucie River, Indian River Lagoon, St. Lucie Inlet, and C-44 Canal
Major roads: I-95, Florida’s Turnpike, U.S. 1, SR A1A, SR 76, SR 714, and SR 710

What the Map Shows

Stuart is the principal reference point in eastern Martin County. Its downtown sits inside the St. Lucie River estuary rather than on the oceanfront. Jensen Beach and Rio are to the north along the Indian River Lagoon, while Palm City is west and southwest across the South Fork of the St. Lucie River. Using the river as a baseline makes their spatial relationship much easier to read.

Southeast of Stuart, Port Salerno faces the protected waters of Manatee Pocket. Hobe Sound lies farther south on the mainland near U.S. 1. On the ocean side, southern Hutchinson Island and Jupiter Island form long barrier islands, separated by St. Lucie Inlet. “Jupiter Island” can refer both to the physical island and to the incorporated town on it, so the place name and municipal boundary are not interchangeable.

Indiantown is a separate western center, far inland from Stuart. It is north of the C-44 Canal near SR 710 and SR 714, where farms and the Lake Okeechobee drainage system shape the landscape. Including this western section prevents the common mistake of treating Martin County as only a string of coastal communities.

County Layout and Location

Martin County extends from the Atlantic between St. Lucie County on the north and Palm Beach County on the south to the eastern shore of Lake Okeechobee. Its long shape is easiest to understand in three zones: the denser eastern mainland and islands, a central highway corridor, and a broad western area of farms, canals, and wetlands.

The North and South forks of the St. Lucie River converge in the Stuart-area estuary, which meets the Indian River Lagoon and Intracoastal Waterway. St. Lucie Inlet opens between Hutchinson Island on the north and Jupiter Island on the south. It connects the Atlantic to the lagoon on the north, the river on the west, and Hobe Sound and the Intracoastal Waterway on the south. Stuart therefore belongs to the coastal region, but the actual ocean beaches and inlet are outside the downtown riverfront.

West of the South Fork, the C-44 Canal—also called the St. Lucie Canal—forms the eastern section of the Okeechobee Waterway. It links Lake Okeechobee with the St. Lucie River navigation and water-management system, passing south of Indiantown before reaching the lower river. The C-44 Reservoir and Stormwater Treatment Area store and treat basin runoff to reduce damaging freshwater and nutrient loads entering the estuary and lagoon.

Local Context

U.S. 1 is the main north–south route through the eastern mainland, placing Jensen Beach, Stuart, Port Salerno, and Hobe Sound in a useful sequence. SR A1A is more closely associated with barrier-island and beach access. Because bridges across the river and lagoon are limited, a short straight-line distance on the map can translate into a much longer driving route.

Florida’s Turnpike and I-95 form the regional north–south corridor west of U.S. 1; in Martin County, I-95 generally lies west of the Turnpike. SR 76, or Kanner Highway, leads from the Stuart–Palm City area toward the C-44 corridor, while SR 714, or Martin Highway, provides another east–west connection between Palm City and Indiantown. At Indiantown, SR 710 links toward Palm Beach County to the southeast and the Okeechobee area to the northwest.

These corridors also help explain local roles. Stuart is the government, commercial, and marine-service center; Palm City is a major residential area west of the river; Jensen Beach and Hutchinson Island provide lagoon and beach access; and Port Salerno and Hobe Sound anchor the southeastern mainland. Indiantown functions as the distinct agricultural and transportation center of western Martin County.

Ways to Use This Map

Check directions and river crossings from Stuart to Palm City, Jensen Beach, and Port Salerno
Compare the coastal order of Hutchinson Island, St. Lucie Inlet, and Jupiter Island
Separate the U.S. 1, Turnpike, and I-95 north–south corridors from the SR 76 and SR 714 east–west routes
Understand why downtown Stuart and Atlantic beaches require different route planning
Follow the C-44 Canal between the Indiantown area, Lake Okeechobee, and the St. Lucie River
Compare Martin County with St. Lucie, Palm Beach, and interior county maps

Frequently Asked Questions

Is Stuart directly on an Atlantic Ocean beach?

No. Downtown Stuart is inside the St. Lucie River estuary. Reaching an Atlantic beach generally requires crossing the Indian River Lagoon to Hutchinson Island or traveling farther south toward Jupiter Island. St. Lucie Inlet is the opening that directly connects the estuary system with the ocean.

How does the C-44 Canal connect Lake Okeechobee with the coast?

C-44 is another name for the St. Lucie Canal, the eastern leg of the Okeechobee Waterway. From Lake Okeechobee it runs past the area south of Indiantown and through the St. Lucie Lock and Dam to the South Fork of the St. Lucie River. Downstream, that system reaches the Stuart estuary, Indian River Lagoon, and St. Lucie Inlet.

Are Hobe Sound and Jupiter Island the same place?

No. Hobe Sound generally refers to the mainland community around U.S. 1, while Jupiter Island is the long, narrow barrier island between the lagoon and Atlantic and is also the name of an incorporated town on that island. Hobe Sound waters and the Intracoastal Waterway separate the mainland from the island.

Sources

Green Map creates custom-edited map images using open geographic data sources such as geoBoundaries, Natural Earth, OpenStreetMap, and government open data.

These maps are edited visual materials, not raw data files, and are provided for education, documents, presentations, and graphic reference.