Demographics of Marathon city, Florida

Marathon city, Florida had 10,060 people on July 1, 2025, by the Census Bureau’s estimate: +197 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Marathon city, in four figures

10,060
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 9,914 ±50.; +2.0%
Change since July 2020: +197 people.; 45.6 ±3.9
Median age: ACS 2020–⁠2024.; $89,355 ±$14,353
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. The Bureau publishes no births, deaths or migration for a place, so the change is the difference between one July estimate and the next.

Marathon city, Florida's population grew 2.0% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Marathon city, 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 — incorporated places and New England towns

About this chart

The figures

Marathon city, Florida's population grew 2.0% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Marathon city, 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	9,863	100.0	100.0
2021	9,920	100.6	100.2
2022	9,985	101.2	100.7
2023	10,115	102.6	101.6
2024	10,180	103.2	102.5
2025	10,060	102.0	103.1

Population of Marathon city, Florida on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	9,863	—
2021	9,920	+57
2022	9,985	+65
2023	10,115	+130
2024	10,180	+65
2025	10,060	−120

Age, 2020–2024

The median age is 45.6 ±3.9: for men 46.7 ±3.3 and for women 43.0 ±5.6. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Marathon city by age, ACS 2020–2024
Age	People	Share	Florida	United States
Under 5	600 ±192	6.1% ±1.9	5.0% ±<0.1	5.6% ±<0.1
5 to 17	1,452 ±283	14.6% ±2.9	14.5% ±0.1	16.3% ±<0.1
18 to 24	524 ±170	5.3% ±1.7	8.1% ±<0.1	9.1% ±<0.1
25 to 44	2,295 ±325	23.1% ±3.3	25.3% ±0.1	26.9% ±<0.1
45 to 64	2,984 ±378	30.1% ±3.8	25.7% ±0.1	24.8% ±<0.1
65 and over	2,059 ±314	20.8% ±3.2	21.3% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $89,355 ±$14,353, and income per person $53,826 ±$6,685, 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 Marathon city by income, ACS 2020–2024
Household income	Households	Share	Florida	United States
Under $25,000	542 ±165	13.5% ±4.0	15.0% ±0.1	14.6% ±<0.1
$25,000 to $49,999	679 ±207	16.9% ±5.0	18.4% ±0.1	16.7% ±<0.1
$50,000 to $74,999	522 ±149	13.0% ±3.6	16.8% ±0.1	15.5% ±<0.1
$75,000 to $99,999	440 ±122	11.0% ±3.0	13.1% ±0.1	12.6% ±<0.1
$100,000 to $149,999	703 ±211	17.5% ±5.1	17.2% ±0.1	17.5% ±<0.1
$150,000 to $199,999	429 ±106	10.7% ±2.6	8.4% ±0.1	9.6% ±<0.1
$200,000 or more	703 ±181	17.5% ±4.4	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 Marathon city by age, ACS 2020–2024
Age	Below poverty	Rate	Florida	United States
All ages	1,322 ±352	13.4% ±3.6	12.6% ±0.1	12.5% ±0.1
Under 18	406 ±149	19.8% ±6.5	16.5% ±0.2	16.1% ±0.1
18 to 59	723 ±200	14.4% ±3.8	11.5% ±0.1	11.6% ±0.1
60 and over	84 to 302	3.1% to 10.5%	11.8% ±0.1	11.0% ±<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%.

Housing, 2020–2024

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Housing in Marathon city, ACS 2020–2024
Measure	Marathon city	Florida	United States
Housing units	6,492 ±351	10,256,470 ±942	143,775,355 ±10,234
Occupied	61.9% ±1.8	85.3% ±0.2	89.9% ±0.1
Vacant	38.1% ±3.4	14.7% ±0.2	10.1% ±0.1
Owner occupied	60.2% ±4.7	67.6% ±0.3	65.2% ±0.3
Renter occupied	39.8% ±4.4	32.4% ±0.2	34.8% ±0.1
Median home value	$725,800 ±$58,769	$359,000 ±$930	$332,700 ±$236
Median gross rent	$1,633 ±$175	$1,669 ±$5	$1,413 ±$2
Median year built	1982 ±2	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 Marathon city by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Florida	United States
Hispanic or Latino	3,395 ±510	34.2% ±5.1	27.4% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	5,902 ±518	59.5% ±5.2	50.4% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	72 to 348	0.7% to 3.5%	14.6% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	0 to 76	0% to 0.8%	2.9% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 21	0% to 0.2%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 21	0% to 0.2%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 50	0% to 0.5%	0.7% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	157 to 549	1.6% to 5.5%	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 Marathon city by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Florida	United States
Born in the state	3,183 ±444	32.1% ±4.5	35.5% ±0.1	57.3% ±<0.1
Born in another state	4,346 ±510	43.8% ±5.1	38.7% ±0.1	26.9% ±<0.1
Born a citizen outside the states	6 to 80	0.1% to 0.8%	4.0% ±0.1	1.7% ±<0.1
Born abroad	2,342 ±326	23.6% ±3.3	21.9% ±0.1	14.1% ±<0.1
Naturalized citizens	1,411 ±309	14.2% ±3.1	12.6% ±0.1	7.4% ±<0.1
Not citizens	931 ±252	9.4% ±2.5	9.3% ±0.1	6.8% ±<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%.

Marathon city among the places of Florida

350th of 482 places of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the Florida page.

Places of Florida near Marathon city in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Cypress Gardens CDP	10,077 ±1,303
Avon Park city	10,057 ±25
Green Cove Springs city	10,044 ±34
Cape Canaveral city	10,006 ±21
Richmond Heights CDP	9,992 ±1,470
Marathon city	9,914 ±50
Beverly Hills CDP	9,650 ±980
St. Augustine Shores CDP	9,462 ±1,716
Brooksville city	9,457 ±42
Palm Beach town	9,348 ±36
Citrus Hills CDP	9,304 ±789

Sources

Census Bureau population estimates — incorporated places and New England towns — 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