With 9,914 people, Marathon is a city in Florida. Home values have more than tripled since 2000, reaching $725,800. At a median age of 45.6, this is an older place than the country as a whole. Getting to work takes 14 minutes on average. 24% of locals were born outside the United States. Households here earn about 20% more than in Florida as a whole.
At a glance
Wealthier
median household income $89,355, 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
Unique to this place
What stands out about Marathon
What changed most since 1990
Hispanic share12.1% → 34.2%(+22.1 pts)US over the same years: +9.9 pts
Median home value (2024 dollars)$345,130 → $725,800(+110%)US over the same years: +67%
Median household income (2024 dollars)$61,161 → $89,355(+46%)US over the same years: +14%
Marathon's population equals 12% of Monroe County's. Its number of veterans equals 7.0% of the county's. Its number of households without a car equals 7.3% of the county's.
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)11%(44)
US avg: 26.4%
Gulf War (1990s)10.3%(41)
US avg: 24.3%
Vietnam era64.9%(259)
US avg: 33.1%
Korean War2%(8)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 399 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Marathon, decade by decade
Marathon population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
8,857
$61,161
$345,130
16.1%
40.2
2000
10,255
$65,598
$272,702
21.0%
52.4
2010
8,297
$73,861
$598,302
30.9%
60.7
2020
9,689
$67,884
$626,867
33.3%
64.7
2024
9,914
$89,355
$725,800
33.1%
65.8
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
