Marathon

County:: Monroe County
County Seat:: No
Area (mi²):: 8.446
State:: Florida

Marathon is a city located in Monroe County, Florida. Marathon has a 2025 population of 9,845. Marathon is currently declining at a rate of -0.02% annually and its population has decreased by -0.1% since the most recent census, which recorded a population of 9,855 in 2020.

The average household income in Marathon is $114,693 with a poverty rate of 11.44%. The median age in Marathon is 45.6 years: 47.3 years for males, and 42.9 years for females.

Demographics

The racial composition of Marathon includes 71.19% White, 4.08% Black or African American, 3.97% other race, and smaller percentages for Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Other race

Asian

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	6,999	71.19%
Two or more races	1,987	20.21%
Black or African American	401	4.08%
Other race	390	3.97%
Asian	54	0.55%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%

Marathon Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Marathon's average per capita income is $42,466. Household income levels show a median of $80,556. The poverty rate stands at 11.44%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$103,214	-
Families	$100,161	$136,205
Households	$80,556	$114,693
Non Families	$54,097	$77,897

$42,466

Average Income

$80,556

Median Household Income

11.44%

Poverty Rate