Marathon Real EstateMarathon is located in Florida. Marathon, Florida has a population of 8,748. Marathon is less family-centric than the surrounding county with 18.1% of the households containing married families with children. The county average for households married with children is 21.11%. The median household income in Marathon, Florida is $54,196. The median household income for the surrounding county is $63,030 compared to the national median of $57,652. The median age of people living in Marathon is 43.5 years. Marathon WeatherThe average high temperature in July is 90.8 degrees, with an average low temperature in January of 64.2 degrees. The average rainfall is approximately 45.9 inches per year, with 0 inches of snow per year. Marathon MapReal estate near MarathonNearby CitiesNearby Cities Homes for Sale |