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CITY

Marathon

Florida · 10,060 residents (2025 est.) · 8.446 sq mi
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The short version

Marathon has roughly average household income, with a median household income of $89,355. Population has declined 3% since 2000. Median home value has more than tripled since 2000, reaching $725,800. With a median age of 45.6, the population is older than the US median of 38.9.

At a glance
Wealthier
above the US median
US median: $82,259
Older
median age 45.6
US median: 38.9
Average education
33% hold a bachelor's degree
US average: 36%
Less affordable
home values up 166%, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
9,914
−3%since 2000
from 10,255 in 2000
1990 – 2025
Population density
1,174 / sq mi
−3%since 2000
from 1,214 / sq mi in 2000
US average: 281
Median age
45.6
+4%since 2000
from 43.8 in 2000
US average: 38.9

PEP 2025 EST:10,060 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
8K9K9K10K10K1990201020202024Marathon
202410K
1990201020202024
Section 02

Income & economy

Median household income
$89,355
+36%inflation adjusted, since 2000
from $36,010 in 2000
US average: $82,259
1990 – 2024
Per capita income
$53,826
+135%since 2000
from $22,894 in 2000
US average: $44,673
Households earning $100K+
56.6%
+28.9 ptssince 2009
from 27.7% in 2009
US average: 53.3%
Poverty rate
13.4%
−0.8 ptssince 2000
from 14.2% in 2000
US average: 12.5%
Income inequality (Gini)
0.508
+7%since 2010
from 0.475 in 2010
US average: 0.476
Workforce by industry, 2024
Information12.3%
US avg: 10.8%
Wholesale trade11.8%
US avg: 6.9%
Finance & insurance6.4%
US avg: 5.9%
Other services5.2%
US avg: 6.7%
Agriculture, forestry, fishing4.7%
US avg: 1.6%
Construction4.7%
US avg: 1.2%
Professional, scientific, technical3.6%
US avg: 5.1%
Education & health services2.8%
US avg: 0.9%
Transportation & warehousing2%
US avg: 2.2%
Public administration1.8%
US avg: 4.8%
Arts, entertainment, food1.1%
US avg: 1.9%
Retail trade0.7%
US avg: 9.9%
Manufacturing0%
US avg: 0.4%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$725,800
+166%inflation adjusted, since 2000
from $149,700 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$1,633
+27%inflation adjusted, since 2000
from $705 in 2000
US average: $1,442
Owner-occupied
60.2%
−3.0 ptssince 2000
from 63.2% in 2000
39.8% rent
Vacancy rate
38.1%
−2.6 ptssince 2009
from 40.7% in 2009
US average: 10.0%
Owner cost-burdened
29.0%
−16.6 ptssince 2009
from 45.7% in 2009
US average: 22.9%
Renter cost-burdened
56.7%
+10.1 ptssince 2009
from 46.6% in 2009
US average: 47.4%
Afford Score
8.1
+95%since 2000
from 4.2 in 2000
1990 – 2024
Gentrification Score
57
RELATED:See current rent listings in Marathon on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic73.3%(7,513)
Black4.4%(449)
Hispanic / Latino20.4%(2,095)
Asian0.5%(47)
Other0%
Diversity Score50.3%(5,155)
2024
White, non-Hispanic59.5%(5,902)
Black2.1%(210)
Hispanic / Latino34.2%(3,395)
Asian0.3%(34)
Other3.8%(373)
Diversity Score65.8%(6,524)
Diversity Score
66
+31%since 2000
from 50 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
33.1%
+12.1 ptssince 2000
from 21.0% in 2000
US average: 35.6%
High school or higher
90.5%
+10.0 ptssince 2000
from 80.5% in 2000
US average: 89.6%
Graduate degree
15.4%
+9.6 ptssince 2000
from 5.8% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
13.7 min
+11%since 2000
from 12.4 min in 2000
US average: 26.5
Drive alone to work
63.4%
−9.3 ptssince 2009
from 72.7% in 2009
US average: 68.9%
Carpooled to work
8.6%
−0.4 ptssince 2009
from 9.0% in 2009
US average: 8.5%
Public transit
0.0%
−2.2 ptssince 2009
from 2.2% in 2009
US average: 3.2%
Worked from home
13.7%
+9.3 ptssince 2009
from 4.4% in 2009
US average: 15.0%
Walked to work
9.2%
+1.5 ptssince 2009
from 7.7% in 2009
US average: 2.4%
Biked to work
1.3%
−0.7 ptssince 2009
from 2.0% in 2009
US average: 0.4%
No vehicle available
3.9%
−4.9 ptssince 2009
from 8.8% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
4.3%
−3.8 ptssince 2011
from 8.1% in 2011
US average: 5.2%
Labor force participation
66.1%
+3.5 ptssince 2011
from 62.6% in 2011
US average: 63.5%
Self-employed
11.9%
+1.0 ptssince 2009
from 10.9% in 2009
US average: 13.1%
Management & professional
33.3%
−24.2 ptssince 2009
from 57.6% in 2009
US average: 42.5%
Section 08

People & community

Male
52.9%
−1.0 ptssince 2009
from 54.0% in 2009
Female
47.1%
+1.0 ptssince 2009
from 46.0% in 2009
Foreign born
23.6%
+5.1 ptssince 2009
from 18.5% in 2009
US average: 14.1%
Veterans
5.1%
−48.0 ptssince 2009
from 53.1% in 2009
US average: 6.2%
With a disability
9.1%
−4.2 ptssince 2012
from 13.3% in 2012
US average: 13.3%
Uninsured
16.6%
−56.0 ptssince 2013
from 72.6% in 2013
US average: 8.4%
Broadband at home
88.0%
+11.5 ptssince 2017
from 76.5% in 2017
US average: 91.0%
English only at home
74.1%
+7.7 ptssince 2016
from 66.4% in 2016
US average: 77.7%
Spanish at home
23.4%
−6.6 ptssince 2016
from 29.9% in 2016
US average: 13.6%
Drill deeper

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Head to head

Compare Marathon to nearby cities

MARATHON VS
Key Largo
Income$85,778−4%
Home value$643,900−11%
Population13,026+29%
SEE FULL COMPARISON →
MARATHON VS
Key West
Income$87,037−3%
Home value$852,400+17%
Population24,999+148%
SEE FULL COMPARISON →
MARATHON VS
Florida City
Income$47,482−47%
Home value$399,200−45%
Population13,576+35%
SEE FULL COMPARISON →
MARATHON VS
Homestead
Income$65,423−27%
Home value$380,000−48%
Population86,242+757%
SEE FULL COMPARISON →
Frequently asked

How many people live in Marathon, Florida?

Marathon, Florida has about 9,914 residents according to the 2024 American Community Survey.

What is the median household income in Marathon, Florida?

The typical household in Marathon, Florida earns about $89,355 a year. Half of households make more than that, and half make less.

Is Marathon, Florida expensive?

In Marathon, Florida, the median home is worth about $725,800, and the typical rent is about $1,633 a month.

How educated are people in Marathon, Florida?

About 33.1% of adults age 25 and over in Marathon, Florida hold a bachelor's degree or higher.

What is the poverty rate in Marathon, Florida?

About 13.4% of people in Marathon, Florida live below the federal poverty line.

Has Marathon, Florida grown since 1990?

Yes, Marathon, Florida has grown since 1990. The population has added about 1,057 residents, a change of about 12 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →