33050) are near the stop light on the Overseas Highway (US 1) for Sombrero Beach Road at Mile Marker (MM) 50 which is the major business district for Marathon and is about halfway between Key Largo and Key West. According to the United States Census Bureau, the city has a total area of , of which are land and , or 8.97%, are water. Its city limits extend from land into the adjacent waters. Boot Key Harbor is a natural body of water between Boot Key and Key Vaca, entirely within the Marathon city limits. Climate Marathon has a tropical savanna climate (Aw in the Köppen and Trewartha climate classifications). There is no record of snow/frost/freeze in Marathon. Like much of Florida and the Florida Keys, Marathon has two seasons; a hot and wet season from May through October, and a warm and dry season from November through April. Demographics 2020 census As of the 2020 United States census, there were 9,689 people, 3,797 households, and 2,151 families residing in the city. 2000 census As of the census of 2000, there were 10,255 people, 4,597 households, and 2,735 families residing in the city. The population density was . There were 6,791 housing units at an average density of . The racial makeup of the city was 91.09% White, 4.65% African American, 0.36% Native American, 0.48% Asian, 0.04% Pacific Islander, 2.00% from other races, and 1.38% from two or more races. Hispanic or Latino of any race were 20.43% of the population. As of 2010, City-Data states racial makeup of the city was White alone – 5,508 (66.4%), Hispanic – 2,224 (26.8%), Black alone – 357 (4.3%), Asian alone – 90 (1.1%), Two or more races - 89 (1.1%), American Indian alone – 25 (0.3%), Native Hawaiian and Other Pacific Islander alone – 2 (0.02%), Other race alone – 2 (0.02%). There were 4,597 households, out of which 34.8% had children under the age of 18 living with them, 48.0% were married couples living together, 7.5% had a female householder with no husband present, and 20.5% were non-families. 29.2% of all households were made up of individuals, and 8.6% had someone living alone who was 65 years of age or older. The average household size was 2.19 and the average family size was 2.68. In the city, the population was spread out, with 17.3% under the age of 18, 6.1% from