Martin County's 2026 population is estimated at 168,516, reflecting a 0.85% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Martin County is the 33rd largest county in Florida. The 2010 population was 146,912 and has grown 14.71% since 2010.
Data after 2023 is projected based on recent change
Overall: 53.3 years
Female: 55 years
Male: 51.3 years
There are 136,042 adults, (52,205 of whom are seniors) in Martin County.
Female: 81,860 (50.5%)
Male: 80,316 (49.5%)
The racial composition of Martin County includes 78.25% White, 4.79% Black or African American, 4.38% other race, and smaller percentages for Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 126,895 | 78.25% |
| Two or more races | 17,542 | 10.82% |
| Black or African American | 7,761 | 4.79% |
| Other race | 7,109 | 4.38% |
| Asian | 2,196 | 1.35% |
| Native American | 616 | 0.38% |
| Native Hawaiian or Pacific Islander | 57 | 0.04% |
Martin County 's average per capita income is $47,104. Household income levels show a median of $82,943. The poverty rate stands at 11.31%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $119,593 | $165,231 |
| Families | $105,283 | $148,140 |
| Households | $82,943 | $123,323 |
| Non Families | $47,471 | $76,314 |
Average Income
Median Household Income
Poverty Rate
