Martin County GIS Maps
Martin County, Florida, has 158,431 residents across 96,170 parcels and covers 543.8 square miles. The population grew 8.3% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Martin County is 12085.
Stuart is the county's largest population center. Martin County also includes 8 zip codes, 1 public school district and 12 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show parcel data, population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers, Parcels and sample data. Paid packages add full layers, analytics and database files.
Martin County Trends
- Population
- 158,431▴
- Median Home Value
- $386,500▴
- K-12 Enrollment
- 18,316▴
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Martin County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
Martin County Parcels
Martin County has 96,170 mapped parcels. The median assessed value is $331,580. The median lot size is 0.28 acres. 2,417 parcels are 10 acres or larger. Of the parcels with a recorded build year, half were built in 1986 or earlier. The records carry 71,644 distinct owner names. About 12% of parcels list an owner mailing address outside Florida. Owner names, mailing addresses, site addresses, assessed values and lot sizes are on nearly every parcel. Browse the interactive Martin County Parcel viewer here.
Martin County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 96,170 | 100% |
| Owner name | 96,169 | 99.9% |
| Owner mailing address | 96,170 | 100% |
| Site address | 96,170 | 100% |
| Land use code | 96,170 | 100% |
| Land use description | 0 | 0% |
| Assessed value | 96,170 | 100% |
| Land value | 96,170 | 100% |
| Improvement value | 0 | 0% |
| Acreage | 96,170 | 100% |
| Parcel boundary | 96,170 | 100% |
| Download all Martin County parcels. | ||
Field coverage measured across all Martin County parcel records.
Martin County Population
Martin County had 158,431 residents in 2020. That was 8.3% higher than in 2010. Martin County added 31,700 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 291 people per square mile. Some of the county's most populated postal areas include Stuart, Palm City and Hobe Sound.
Population Trend in Martin County FL
Martin County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Martin County Zip Codes
Martin County has 8 zip codes. Some of the county's most populated zip codes include Stuart (34997), Palm City (34990) and Hobe Sound (33455). Stuart is the largest zip by population, with about 44,000 residents or 28% of the county total. Together, the three largest zips account for about 61% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Martin County FL
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 34997 | Stuart | 44,000 | ▴ 8.9% |
| 34990 | Palm City | 31,160 | ▴ 12.5% |
| 33455 | Hobe Sound | 20,799 | ▴ 4.1% |
| 34994 | Stuart | 17,843 | ▴ 11.7% |
| 33469 | Jupiter | 15,101 | ▴ 4.5% |
| Download all zip code data | |||
Martin County Zip Code populations and trends per most recent census data.
Martin County Demographics
Martin County has a median age of 53.2, which makes the county a little older than Florida overall. About 16.3% of residents are under 18, while 31.8% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 65 and over at about 31.8% of the population, which points to an older population profile. About 36.6% of adults have a bachelor's degree or higher, above the statewide figure of 33.2%. The county is majority White by population, with Hispanic, Asian, Black and multiracial residents making up a meaningful share of the local mix.
Key Demographics for Martin County FL
Median Age
53.2
Under 18
16.3%
Age 65+
31.8%
Bachelor's+
36.6%
Martin County School Districts
Martin County is served by 1 public school district with 18,316 students enrolled in 2024. Several larger districts account for a substantial share of students across the county map area. Those three districts account for about 100% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, but it is slightly lower than it was in 2017.
Largest School Districts by Enrollment in Martin County FL
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Martin County School District | 18,316 | 100% | ▴ 0.3% |
| Download all school district data | |||
Martin County school district enrollment and trends per most recent NCES reporting data.
Martin County Housing & Real Estate
Martin County has a median home value of $386,500 and a median gross rent of $1,499. About 80% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the Florida median, while rents come in below the state average. In March 2026, the median listing price was $527,450 and homes spent about 67 days on the market.
Martin County Housing Mix
Martin County housing mix: owner, renter and vacant units.
Martin County Housing Trends
Martin County median home value and rent trend (last 5 years).
Businesses in Martin County, FL
Martin County has 8,844 business listings across 868 categories. The largest categories in Martin County business listings are Real Estate Agents (263, 3.0%), Contractors (141, 1.6%), and Beauty Salons (132, 1.5%). The full Martin County business listings dataset includes names, categories, addresses and contact details where available. Martin County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Martin County, FL
| Category | Businesses | Share |
|---|---|---|
| Real Estate Agents | 263 | 3.0% |
| Contractors | 141 | 1.6% |
| Beauty Salons | 132 | 1.5% |
| Community & Nonprofits | 119 | 1.3% |
| Churches & Religious Organizations | 118 | 1.3% |
| Real Estate | 114 | 1.3% |
| Insurance Agencies | 110 | 1.2% |
| Parks & Recreation | 105 | 1.2% |
| Hair Salons | 104 | 1.2% |
| ATMs | 95 | 1.1% |
Martin County Business Listings
| Business | Category | City |
|---|---|---|
| The Gittens Clinic INC | Abuse And Addiction Treatment | Stuart |
| Hobe Hills | Accommodation | Hobe Sound |
| Cain & Firley CPA's PA | Accountant | Stuart |
| The Stuart Sandbar | Active Life | Stuart |
| Florida Senior Acupuncture | Acupuncture | Stuart |
| Recovery By The Sea | Addiction Rehabilitation Center | Stuart |
| Spencer's | Adult Entertainment | Jensen Beach |
| Main Street Media 360 | Advertising Agency | Stuart |
| Martin County Farm Bureau | Agricultural Cooperatives | Stuart |
| Hobe Sound Honeybees | Agricultural Service | Hobe Sound |
| Download Martin County business listings | ||
Martin County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Martin County Basemaps
Martin County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full Martin County Data Package
This page shows a preview of what's included in the Martin County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for parcels, zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Martin County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.