Demographics of Martin County, Florida

Martin County, Florida had 166,272 people on July 1, 2025, by the Census Bureau’s estimate: +7,616 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Martin County, in four figures

166,272
Population: July 1, 2025, Vintage 2025 estimate.; +4.8%
Change since July 2020: +7,616 people.; 53.3 ±0.2
Median age: ACS 2020–⁠2024.; $82,943 ±$2,984
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Martin County, Florida's population grew 4.8% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Martin County, Florida's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Martin County, Florida's population grew 4.8% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Martin County, Florida's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	158,656	100.0	100.0
2021	160,224	101.0	100.2
2022	162,358	102.3	100.7
2023	163,996	103.4	101.6
2024	165,202	104.1	102.5
2025	166,272	104.8	103.1

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Population of Martin County, Florida on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	158,656	+224	−250	+2	+506
2021	160,224	+1,568	−1,227	+103	+2,795
2022	162,358	+2,134	−1,156	+633	+2,559
2023	163,996	+1,638	−990	+824	+1,783
2024	165,202	+1,206	−1,088	+1,119	+1,179
2025	166,272	+1,070	−1,046	+465	+1,671

Age, 2020–2024

The median age is 53.3 ±0.2: for men 51.3 ±0.4 and for women 55.0 ±0.2. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Martin County by age, ACS 2020–2024
Age	People	Share	Florida	United States
Under 5	6,454 ±194	4.0% ±0.1	5.0% ±<0.1	5.6% ±<0.1
5 to 17	19,680 ±923	12.1% ±0.6	14.5% ±0.1	16.3% ±<0.1
18 to 24	9,941 ±682	6.1% ±0.4	8.1% ±<0.1	9.1% ±<0.1
25 to 44	30,704 ±1,069	18.9% ±0.7	25.3% ±0.1	26.9% ±<0.1
45 to 64	43,192 ±1,172	26.6% ±0.7	25.7% ±0.1	24.8% ±<0.1
65 and over	52,205 ±1,532	32.2% ±0.9	21.3% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $82,943 ±$2,984, and income per person $53,291 ±$1,408, in 2024 dollars. The median is $74,568 ±$284 in Florida and $80,734 ±$166 in the United States.

Households by income

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Households in Martin County by income, ACS 2020–2024
Household income	Households	Share	Florida	United States
Under $25,000	8,589 ±731	12.7% ±1.1	15.0% ±0.1	14.6% ±<0.1
$25,000 to $49,999	12,884 ±1,038	19.0% ±1.5	18.4% ±0.1	16.7% ±<0.1
$50,000 to $74,999	9,557 ±877	14.1% ±1.3	16.8% ±0.1	15.5% ±<0.1
$75,000 to $99,999	8,253 ±611	12.2% ±0.9	13.1% ±0.1	12.6% ±<0.1
$100,000 to $149,999	12,041 ±1,069	17.8% ±1.6	17.2% ±0.1	17.5% ±<0.1
$150,000 to $199,999	6,320 ±647	9.3% ±0.9	8.4% ±0.1	9.6% ±<0.1
$200,000 or more	10,157 ±676	15.0% ±1.0	11.0% ±0.1	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Martin County by age, ACS 2020–2024
Age	Below poverty	Rate	Florida	United States
All ages	17,940 ±1,727	11.3% ±1.1	12.6% ±0.1	12.5% ±0.1
Under 18	4,677 ±663	18.1% ±2.4	16.5% ±0.2	16.1% ±0.1
18 to 59	7,709 ±1,070	11.2% ±1.5	11.5% ±0.1	11.6% ±0.1
60 and over	5,554 ±578	8.6% ±0.9	11.8% ±0.1	11.0% ±<0.1

Housing, 2020–2024

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Housing in Martin County, ACS 2020–2024
Measure	Martin County	Florida	United States
Housing units	83,121 ±59	10,256,470 ±942	143,775,355 ±10,234
Occupied	81.6% ±1.1	85.3% ±0.2	89.9% ±0.1
Vacant	18.4% ±1.1	14.7% ±0.2	10.1% ±0.1
Owner occupied	79.6% ±1.0	67.6% ±0.3	65.2% ±0.3
Renter occupied	20.4% ±1.3	32.4% ±0.2	34.8% ±0.1
Median home value	$432,200 ±$10,447	$359,000 ±$930	$332,700 ±$236
Median gross rent	$1,569 ±$58	$1,669 ±$5	$1,413 ±$2
Median year built	1986 ±1	1988 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Martin County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Florida	United States
Hispanic or Latino	25,843 ±0	15.9% ±<0.1	27.4% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	121,241 ±519	74.8% ±0.3	50.4% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	7,569 ±543	4.7% ±0.3	14.6% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	2,120 ±209	1.3% ±0.1	2.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	36 to 162	< 0.1% to 0.1%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 123	0% to 0.1%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	464 ±217	0.3% ±0.1	0.7% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	4,783 ±741	2.9% ±0.5	3.8% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Martin County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Florida	United States
Born in the state	50,306 ±1,668	31.0% ±1.0	35.5% ±0.1	57.3% ±<0.1
Born in another state	90,790 ±1,459	56.0% ±0.9	38.7% ±0.1	26.9% ±<0.1
Born a citizen outside the states	3,051 ±511	1.9% ±0.3	4.0% ±0.1	1.7% ±<0.1
Born abroad	18,029 ±1,195	11.1% ±0.7	21.9% ±0.1	14.1% ±<0.1
Naturalized citizens	9,821 ±912	6.1% ±0.6	12.6% ±0.1	7.4% ±<0.1
Not citizens	8,208 ±961	5.1% ±0.6	9.3% ±0.1	6.8% ±<0.1

Martin County among the counties of Florida

33rd of 67 by population, July 2025. Every one is listed on the Florida page.

Counties of Florida near Martin County in population, July 2025
County	July 2025	Change since 2020
Charlotte County	217,212	+15.5%
Santa Rosa County	211,115	+11.7%
Bay County	204,479	+17.1%
Indian River County	172,799	+7.7%
Citrus County	171,666	+11.1%
Martin County	166,272	+4.8%
Sumter County	157,772	+21.1%
Flagler County	140,360	+21.0%
Highlands County	111,122	+9.7%
Nassau County	106,879	+17.4%
Walton County	93,288	+22.9%

Elsewhere on the site

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Data retrieved September 25, 2026