Marathon Flag

Marathon

County:
Clermont County
County Seat:
No
Area (mi²):
0.17
State:
Ohio

Marathon is a CDP located in Clermont County, Ohio. Marathon has a 2026 population of 185. Marathon is currently growing at a rate of 6.94% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median age in Marathon is 44.9 years: 0 years for males, and 71.1 years for females. For every 100 females there are 114.7 males.

185
Total Population
1,088
Density (mi²)
12 6.94%
Growth

Marathon Population

Marathon Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026185126.94%
2025173116.79%

Median Age

Overall: 44.9 years
Female: 71.1 years
Male: 0 years

Marathon Adults

There are 132 adults, (68 of whom are seniors) in Marathon.

Sex Ratio

Female: 68 (46.6%)
Male: 78 (53.4%)

Demographics

The racial composition of Marathon includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White146100%
Race
Population ↓
Percentage (of total)
White146100%

Marathon Marital Status

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)