Marathon Flag

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 2026 population of 10,130. Marathon is currently growing at a rate of 0.46% annually and its population has increased by 2.77% since the most recent census, which recorded a population of 9,857 in 2020.

The median household income in Marathon is $89,355 with a poverty rate of 13.37%. The median age in Marathon is 45.6 years: 46.7 years for males, and 43 years for females. For every 100 females there are 112.4 males.

10.1K
Total Population
1,199
Density (mi²)
46 0.46%
Growth

Marathon Population

Marathon Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202610,130460.46%
202510,084450.45%
202410,0391001.01%
20239,939440.44%
20229,895-17-0.17%
20219,912550.56%
20209,8571231.26%
20198,540-18-0.21%
20188,558-264-2.99%
20178,822-20-0.23%
20168,8421381.59%
20158,704580.67%
20148,646470.55%
20138,5991481.75%
20128,451570.68%
20118,394971.17%
20108,319170.2%
200010,25500%

Median Age

Overall: 45.6 years
Female: 43 years
Male: 46.7 years

Marathon Adults

There are 7,862 adults, (2,059 of whom are seniors) in Marathon.

Sex Ratio

Female: 4,668 (47.1%)
Male: 5,246 (52.9%)

Demographics

The racial composition of Marathon includes 68.35% White, 4.92% other race, and smaller percentages for Black or African American, Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White6,77668.35%
Two or more races2,37623.97%
Other race4884.92%
Black or African American2202.22%
Asian540.54%
Race
Population ↓
Percentage (of total)
Two or more races2,02320.41%
White8748.82%
Other race4684.72%
Asian200.2%
Black or African American100.1%
Race
Population ↓
Percentage (of total)
White5,90259.53%
Two or more races3533.56%
Black or African American2102.12%
Asian340.34%
Other race200.2%

Marathon Marital Status

Economics and Income Statistics

Marathon 's average per capita income is $47,393. Household income levels show a median of $89,355. The poverty rate stands at 13.37%.

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$111,875-
Families$104,129$159,815
Households$89,355$130,562
Non Families$46,250$76,538

$47,393

Average Income

$89,355

Median Household Income

13.37%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)