St. Lucie County, Florida Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 20th-largest in Florida

The population of St. Lucie County, Florida is 346,237 as of the 2023 American Community Survey, making it the 20th-largest county in Florida. The median household income is $69,027, the median home value is $305,800, and the median age is 45.3.

The population of St. Lucie County has grown 40.4% since 2010 (278,290 → 390,670), a +2.45% annualized rate.

St. Lucie County within Florida · Source: US Census TIGER/Line via us-atlas

346,237

Population

+2.45%

Annual growth

605

People / sq mi

$69,027

Median Income

$305,800

Median Home Value

St. Lucie County covers 572 sq mi of land at 605.4 people per square mile.

About St. Lucie County, FL

St. Lucie County stands apart on settlement density — it is among the most densely settled of US counties, at roughly 605 people per square mile. With 346,237 residents, St. Lucie County is a county in Florida. It ranks #20 among counties in Florida by population.

The typical household here earns about $69,027, below the US median of $78,538. About 7.8% of residents live below the federal poverty level, below the national 12.4%. The median home value is $305,800, with typical rent around $1,489.

Degree attainment is mid-range for US counties: 25.4% of adults hold a four-year degree, below the national 35.0%. About 10.2% of workers primarily work from home, below the national 14.0%, and the average commute runs about 29 minutes each way.

That density explains much of the rest of the profile in St. Lucie County: denser places lean toward renting, shorter commutes by transit, and a younger working-age mix.

St. Lucie County Population History (2010-2024)

The county of St. Lucie County had a population of 278,290 in 2010 and 390,670 in 2024, a 40.4% growth over 14 years. The peak was 390,670 in 2024. Average annual growth rate: 2.46%.

St. Lucie County population, 2010–2024 · Source: U.S. Census Bureau — decennial census & Population Estimates

390,670

Population (2024)

278,290

Population (2010)

390,670

Peak (2024)

2.46%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	278,290	-	-	estimate
2011	280,481	+2,191	+0.79%	estimate
2012	283,042	+2,561	+0.91%	estimate
2013	285,437	+2,395	+0.85%	estimate
2014	290,207	+4,770	+1.67%	estimate
2015	297,471	+7,264	+2.50%	estimate
2016	305,775	+8,304	+2.79%	estimate
2017	313,207	+7,432	+2.43%	estimate
2018	320,340	+7,133	+2.28%	estimate
2019	328,063	+7,723	+2.41%	estimate
2020	331,461	+3,398	+1.04%	estimate
2021	344,300	+12,839	+3.87%	estimate
2022	359,882	+15,582	+4.53%	estimate
2023	376,186	+16,304	+4.53%	estimate
2024	390,670	+14,484	+3.85%	estimate

Race & Ethnicity

White	59.8%
Black or African American	21.0%
Asian	0.0%
Hispanic or Latino (any race)	1.1%
Two or More Races	0.0%

Age & Sex

45.3

Median Age

50.9%

Female

49.1%

Male

24.4%

Age 65+

Age Distribution

Under 5

5.0%

5–9

5.1%

10–14

6.1%

15–19

5.6%

20–24

5.0%

25–34

11.4%

35–44

11.5%

45–54

11.8%

55–59

6.7%

60–64

7.3%

65–74

13.6%

75–84

8.4%

85+

2.4%

Children (under 15): 16.2% · Seniors (65+): 24.4%

Income & Poverty

Median household income	$69,027$-2,684 vs state
Mean household income	$88,516
Per-capita income	$35,125
Poverty rate	7.8%-1.1% vs state
Unemployment rate	3.3%
Employment-to-population	52.9%

Top Industries by Employment

Professional & business services

23.2%

Finance & real estate

12.3%

Education & health care

9.5%

Construction

9.1%

Retail trade

7.5%

Information

5.9%

Arts, entertainment & food

5.8%

Manufacturing

5.5%

The largest employment sector in St. Lucie County is professional & business services, accounting for 23.2% of workers.

How residents commute

0.3%

Drive alone

1.2%

Carpool

77.9%

Public transit

10.2%

Work from home

28.5 min

Avg commute

Housing

$305,800$-19,200 vs state

Median home value

$1,489

Median rent

77.7%

Homeownership rate

154,930

Total housing units

85.0%

Occupied

15.0%

Vacant

22.3%

Renter-occupied

Social & access

87.9%

With health insurance

96.0%

With broadband internet

44.7%

Foreign-born

9.3%

Veterans (18+)

15.2%

With a disability

76.2%

Speak language other than English at home

Education

88.6%

High School+

25.4%

Bachelor's+

Largest cities in Florida

Jacksonville (961,739)Miami (446,663)Tampa (393,389)Orlando (311,732)St. Petersburg (260,646)Hialeah (221,901)Port St. Lucie (220,453)Cape Coral (206,387)Tallahassee (199,696)Fort Lauderdale (183,032)All Florida cities →

Other counties in Florida

Miami-Dade County (2,685,296)Broward County (1,946,127)Palm Beach County (1,507,453)Hillsborough County (1,489,634)Orange County (1,440,471)Duval County (1,007,189)Pinellas County (960,565)Lee County (792,692)Polk County (760,961)Brevard County (620,533)All Florida counties →

Part of Florida

Florida demographic profile All Florida data →

Metro areas in Florida

Miami (6,138,876)Tampa (3,240,469)Orlando (2,721,022)Jacksonville (1,645,707)North Port (865,031)Cape Coral (792,692)Lakeland (760,961)Deltona (689,939)All US metros →

County rankings

US Counties by Population Richest US Counties by Median Household Income Expensive US Counties by Home Value Educated US Counties Counties With Highest Poverty Rates Youngest US Counties by Median Age Oldest US Counties by Median Age Cheapest US Counties by Median Home Value Racially Diverse US Counties Counties With Largest Hispanic Population All rankings →

Frequently Asked Questions

St. Lucie County, Florida has a population of 346,237 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 20th-largest county in Florida. Population density is 605 people per square mile.

The population of St. Lucie County has grown 40.4% since 2010 (278,290 → 390,670), a +2.45% annualized rate.

The median household income in St. Lucie County, Florida is $69,027, with mean (average) household income of $88,516 and per-capita income of $35,125. 7.8% of residents live below the federal poverty level.

In St. Lucie County, the largest racial and ethnic groups are White (59.8%), Black or African American (21.0%), Hispanic or Latino (1.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in St. Lucie County, Florida is 45.3 years. Residents are 50.9% female and 49.1% male.

The median home value in St. Lucie County is $305,800 and median monthly rent is $1,489. 77.7% of occupied housing units are owner-occupied. The county has 154,930 total housing units, 15.0% of which are vacant.

The largest employment sector in St. Lucie County, Florida is professional, scientific, and management services, employing 23.2% of workers. The unemployment rate is 3.3%.

Jacksonville is among the largest cities associated with St. Lucie County, Florida, with a population of 961,739.