Creek is mostly marshland). Tybee Creek flows along the south shore of Tybee Island and joins the Atlantic at the island's southeastern tip. Little Tybee Island, which consists mostly of protected wetlands, lies across Tybee Creek to the southwest. The size of the sandy beach at the southern tip of Tybee Island varies considerably in response to tidal changes. According to the United States Census Bureau, the city has a total area of . Of this, is land and , or 27.2%, is water. The entire island (as distinguished from the city of the same name) has a land area of . Climate Tybee Island has hot weather in summer, while in winter the weather is cool with winds. Over the course of the year, the temperature typically varies from 45 °F to 88 °F and is rarely below 33 °F or above 93 °F. The below table shows the monthly average temperatures: Demographics 2020 census As of the 2020 United States census, there were 3,114 people, 1,305 households, and 831 families residing in the city. 2010 census As of the census of 2010, there were 2,990 people, 1,360 households, and 772 families residing in the city. The population density was . There were 3,366 housing units at an average density of . The racial makeup of the city was 93.5% White, 3.1% African American, 0.5% Native American, 1.2% Asian, 0.5% from other races, and 1.1% from two or more races. Hispanic or Latino of any race were 1.5% of the population. There were 1,360 households, out of which 12.6% had children under the age of 18 living with them, 47.5% were married couples living together, 6.5% had a female householder with no husband present, and 43.2% were non-families. 32.1% of all households were made up of individuals, and 12.1% had someone living alone who was 65 years of age or older. The average household size was 2.11 and the average family size was 2.65. In the city, the population was spread out, with 11.9% under the age of 18, 6.0% from 18 to 24, 18.0% from 25 to 44, 41.3% from 45 to 64, and 22.8% who were 65 years of age or older. The median age was 53.2 years. For every 100 females, there were 94.7 males. The median income for a household in the city was $53,732, and the median income for a family was $67,202. Males