St. Lucie County's 2026 population is estimated at 419,638, reflecting a 3.57% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). St. Lucie County is the 20th largest county in Florida. The 2010 population was 278,290 and has grown 50.79% since 2010.
Data after 2023 is projected based on recent change
Overall: 45.1 years
Female: 46.3 years
Male: 44 years
There are 289,599 adults, (88,534 of whom are seniors) in St. Lucie County.
Female: 183,363 (50.9%)
Male: 177,137 (49.1%)
The racial composition of St. Lucie County includes 56.93% White, 21.63% Black or African American, 4.94% other race, and smaller percentages for Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 205,243 | 56.93% |
| Black or African American | 77,974 | 21.63% |
| Two or more races | 50,253 | 13.94% |
| Other race | 17,809 | 4.94% |
| Asian | 7,097 | 1.97% |
| Native American | 2,001 | 0.56% |
| Native Hawaiian or Pacific Islander | 123 | 0.03% |
St. Lucie County 's average per capita income is $44,462. Household income levels show a median of $71,457. The poverty rate stands at 12.28%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $94,549 | $117,237 |
| Families | $82,201 | $104,986 |
| Households | $71,457 | $92,386 |
| Non Families | $39,924 | $57,549 |
Average Income
Median Household Income
Poverty Rate