Saucier is a census-designated place (CDP) in Harrison County, Mississippi, United States. It is part of the Gulfport–Biloxi Metropolitan Statistical Area. The population was 1,342 at the 2010 census.
Saucier is located at 30°37′30″N 89°8′18″W (30.625130, -89.138438).
According to the United States Census Bureau, the CDP has a total area of 7.1 square miles (18 km2), of which 7.0 square miles (18 km2) is land and 0.1 square miles (0.26 km2) (0.85%) is water.
As of the census of 2000, there were 1,303 people, 478 households, and 367 families residing in the CDP. The population density was 186.2 people per square mile (71.9/km²). There were 507 housing units at an average density of 72.4/sq mi (28.0/km²). The racial makeup of the CDP was 97.47% White, 0.69% African American, 0.15% Native American, 0.23% Asian, 0.15% Pacific Islander, 0.15% from other races, and 1.15% from two or more races. Hispanic or Latino of any race were 1.38% of the population.
There were 478 households out of which 38.3% had children under the age of 18 living with them, 59.8% were married couples living together, 9.6% had a female householder with no husband present, and 23.2% were non-families. 16.1% of all households were made up of individuals and 5.2% had someone living alone who was 65 years of age or older. The average household size was 2.73 and the average family size was 3.04.