How many people live in Martin County, FL?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 165,700 people living in Martin County, FL. That makes Martin County the 33rd-most populous county in Florida. It is home to 0.71% of people living in the state.
166K
population of Martin County, FL (2024)
0.71%
County share of the Florida population (2024)
About 165,700 people lived in Martin County, FL in 2024.
Population estimates, 2000–2024
What are Martin County, FL’s age demographics?
About 54,500 Martin County, FL residents are aged 65 and older in 2024. That represents 32.9% of its population. For comparison, the age group represents 21.8% of Florida’s population and 18% in the US overall.
Another 26,200 Martin County residents, or 15.8% of the population, were children under 18. For comparison, the age group represents 19.3% of Florida’s population and 21.6% in the US overall.
A higher share of Martin County, FL's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Martin County, FL’s racial and ethnic demographics?
Non-Hispanic white residents make up 74.8% of the Martin County, FL population, higher than the national share of 57.5%.
In contrast, Martin County’s non-Hispanic Black or African American population accounts for 5%, below the 12.6% nationwide, and the non-Hispanic Asian population makes up 1.6% of the county, compared with 6.5% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Martin County, FL has a higher share of a non-Hispanic white population than Florida as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Martin County, FL is Stuart with about 19,600 residents in 2024.
Cities and towns in Martin County, FL ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Stuart | 19,566 |
| 2. | Indiantown | 6,810 |
| 3. | Sewall's Point | 2,072 |
| 4. | Jupiter Island | 837 |
| 5. | Ocean Breeze | 402 |
| 6. | Balance of Martin County | 135,979 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
