Marathon, Florida

Marathon population, 2020 to 2024

Marathon added 182 residents from July 2020 to July 2024, a change of +1.8%. In the latest year it moved by +100. Among 229 Florida places of 5,000 or more, that growth ranks 186th; the median place changed by +4.8%. The median place of 5,000+ in Florida has 21,954 people, so Marathon is 46% of it.

Marathon covers 8.45 square miles of land and 0.83 of water, for 1,188 people per square mile of land. The median Florida place of 5,000+ has 2,498, so Marathon is less dense than the typical town.

What county Marathon is in

All of Marathon's residents live in Monroe County, which had 80,908 residents in 2024. Marathon holds 12.4% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Marathon

1 ZIP Code Tabulation Area (ZCTA) overlaps Marathon by at least 10% of the ZCTA's or the city's land: 33050. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Marathon is

The Census internal point of Marathon is at 24.732300, -81.025100. Tallahassee, the capital, is 441.7 miles NNW in a straight line. The nearest larger place is Key West, FL (25,240 people), 48.5 miles away. The nearest city of 100,000 or more is Miami, FL, 88.3 miles away.

Daylight in Marathon

At 24.73° N, Marathon gets about 13 h 40 min of daylight around the June solstice and 10 h 36 min around the December solstice, a swing of 3 h 04 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Marathon

The eight nearest incorporated places of 1,000+ in Florida, measured between internal points. The closest is Islamorada, Village of Islands, 34.9 miles away, with 7,013 people.