Martin County, Florida
Located in Florida, Martin County has a population of 162,176 residents and a median age of 53.3 years, making it the #426 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 11.3%. The median home value is $432,200, and the median household income is $82,943, which is 10% above the national median.
Demographics
Martin County has a population of 162,176, making it the #426 most populous county in the US. The median age is 53.3 years, which is 37.0% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Martin County is $82,943, ranking #486 out of 3,222 counties — 10.4% above the national median. The poverty rate is 11.3% and unemployment stands at 4.9%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Martin County is $432,200 (+53.3% vs national). Renters pay a median of $1,569/mo and the homeownership rate is 79.6%.
Median Home Value Trend
Rankings →Household Type
Education
In Martin County, 37.1% of adults age 25+ hold a bachelor's degree or higher, which is 10.2% above the national average, ranking #375 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Martin County is 80.4 years. 15.4% of adults report poor or fair health and 13.5% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
14.9% of adults in Martin County smoke , 27.6% are obese , and 21.6% report excessive drinking. The drug overdose death rate is 30.4 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Martin County is 4.2 per 100,000 and the suicide rate is 17.0 per 100,000. Motor vehicle deaths occur at a rate of 12.6 per 100,000.
Homicide Rate Trend
Families & Children
17.0% of children in Martin County live in poverty and the infant mortality rate is 4.7 per 1,000 live births. The teen birth rate is 14.0 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Martin County is 77.4%. The mean commute time is 31.1 min, which is 12.6% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Martin County voted Republican with a margin of 31.1%. The vote was 34.1% Dem / 65.2% Rep. Compared to 2020, the margin shifted 6.5 toward Republicans .
Vote Share Over Time
About Martin County, Florida
Martin County, Florida has a total population of 162,176, making it the 426th most populous county in the United States. The median age in Martin County is 53.3 years, which is 37.0% above the national median of 38.9 years.
The median household income in Martin County is $82,943, which ranks #486 of 3,222 counties nationwide. This is 10.4% above the national median of $75,149. The poverty rate is 11.3%, lower than the national rate of 12.6%. The unemployment rate stands at 4.9%.
The median home value in Martin County is $432,200, 53.3% above the national median. Renters in Martin County pay a median gross rent of $1,569 per month. The homeownership rate is 79.6%, compared to the national rate of 64.4%.
In Martin County, 37.1% of residents aged 25 and older hold a bachelor's degree or higher, 10.2% above the national average of 33.7%. Health insurance coverage stands at 89.5% of the population. The average commute time for workers is 31.1 min.
Martin County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 74.8% of the population, followed by Hispanic or Latino (15.9%) and Black (non-Hispanic) (4.7%).
All data for Martin County, Florida comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.