Long Beach is a city (incorporated August 10, 1905) located in Harrison County, Mississippi, United States. It is part of the Gulfport–Biloxi Metropolitan Statistical Area. As of the 2010 census, the city had a population of 14,792.
According to the United States Census Bureau, the city has a total area of 10.4 square miles (26.9 km2), of which 10.0 square miles (25.9 km2) is land and 0.39 square miles (1.0 km2), or 3.74% is water.
As of the census of 2000, there were 17,320 people, 6,560 households, and 4,696 families residing in the city. The population density was 1,713.6 people per square mile (661.5/km2). There were 7,203 housing units at an average density of 712.6 per square mile (275.1/km2). The racial makeup of the city was 87.49% White, 7.36% African American, 0.39% Native American, 2.57% Asian, 0.07% Pacific Islander, 0.68% from other races, and 1.44% from two or more races. 2.29% of the population were Hispanic or Latino of any race.
There were 6,560 households, out of which 36.2% had children under the age of 18 living with them, 53.8% were married couples living together, 13.5% had a female householder with no husband present, and 28.4% were non-families. 22.9% of all households were made up of individuals, and 7.7% had someone living alone who was 65 years of age or older. The average household size was 2.61 and the average family size was 3.07.