}} connecting to Robert Bay and the intercoastal waterway by
Siesta Key taken from ISS Expedition 18
2020 census As of the
2020 census, Siesta Key had a population of 5,454. The median age was 64.6 years. 7.4% of residents were under the age of 18 and 49.0% of residents were 65 years of age or older. For every 100 females there were 93.5 males, and for every 100 females age 18 and over there were 91.4 males age 18 and over. 100.0% of residents lived in urban areas, while 0.0% lived in rural areas. There were 2,814 households in Siesta Key, of which 10.8% had children under the age of 18 living in them. Of all households, 56.6% were married-couple households, 15.7% were households with a male householder and no spouse or partner present, and 23.7% were households with a female householder and no spouse or partner present. About 32.2% of all households were made up of individuals and 21.6% had someone living alone who was 65 years of age or older.
Income and poverty The median household income was $108,527. 3.3% of the population lived below the
poverty threshold. 98.7% of households had a computer, and 91.3% of households had a broadband internet subscription. ==Notable people==