Marathon is a city in the middle of the Florida Keys, in Monroe County, Florida, United States. As of 2024, the city had a population of 9,914, up from 8,297 in 2010.

Official town website ↗

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

How Marathon ranks

All →

#4Shortest commute in FL #32Most conserved land in FL #47Lowest obesity in FL All FL rankings →

Town numbers

ZIP code33050

Area code305

Living in Marathon

Housing in Marathon

$833K▲ 1.1% in a year Typical home value · Zillow

The typical Marathon home is worth about $833,000, up 1.1% in a year, 122% above the Florida typical home.

A balanced market

Buyer’sBalancedSeller’s

Days on market74

Sale-to-list92%

Sold in May33

Zillow Home Value Index · Redfin Data CenterHousing market →

Work & commute in Marathon

Full picture →

About one in 3 of Marathon’s working residents works in town. The top destinations are Key West (10%), Miami (3%) and Key Colony Beach (3%). Half commute less than 45 miles.

Key West

10%

Miami

Key Colony Beach

Islamorada, Village of Islands

37%Work in townlive and work in Marathon 45 miWhere do people commute?the commute map 3,523Jobs based herebalanced

Census LEHD 2023 · ACSWork & commute in Marathon →

Health in Marathon

Health Grade B

Healthier than 62% of U.S. towns on seven CDC estimates.

Compared with Florida

1better than FL·1worse

of 26 measures CDC estimates. The other 24 are too close to call.

Conditions 1▼ 11 close Habits all close Care 1▲ 6 close Mind all close

BetterToo close to callWorse

What stands out

88.6%More adults getting cholesterol checkedFL 87% · better 10.2%More adults who have had cancerFL 9.1% · worse

Care nearby

Fishermen's Community HospitalMarathon · 4.6 mi · ER · rural critical access

Marathon Health CenterMarathon · 4.8 mi · sliding-scale fees

Primary careNo shortage

DentalNo shortage

Mental healthShortage · county-wide

CDC PLACES 2025 · modeled estimates for adults · CDC's estimate for Marathon · CMS · HRSAHealth in Marathon →

Natural hazards in Marathon

Very high

Expected storm and flood damage is higher than in 93% of U.S. communities.

🌀 Hurricanes🌊 Coastal flooding

2,134Does Marathon flood?paid flood claims since 1998 13Disasters that paid out herefederal disasters sent FEMA money to Marathon

FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Marathon →

Climate in Marathon

Full climate →

Marathon has warm winters and warm summers. A typical July afternoon reaches 90°, a January night drops to 64°, and snow is almost unheard of.

77° / 65°Winter

83° / 71°Spring

90° / 78°Summer

85° / 74°Fall

How much snow does Marathon get?Almost none.Rain & snow →Does it ever freeze?In about 0% of years.Frost →Is it warmer than it used to be?+1.8° vs. the 20th century.Then & now →

NOAA U.S. Climate Normals, 1991–2020Climate in Marathon →

Schools in Marathon

All Marathon schools →

B⁺

School Grade B+

The public schools Marathon’s kids attend, from kindergarten through graduation, outperform 70% of Florida’s districts on state tests and graduation. Among towns with similar incomes, they rank near the top.

#228Best public schoolsof 488 in FL

DistrictMONROESchools2

Stanley Switlik Elementary School B+Elementary · Grades PK–5 · 602 students Marathon School C+High · Grades 6–12 · 809 students

School data from the U.S. Department of Education (NCES, EDFacts). The School Grade is our own summary of state test results and graduation rates, graded within FL. Ratings are from neighbors.