Caddo Parish (French: Paroisse de Caddo) is a parish located in the northwest corner of the U.S. state of Louisiana. As of the 2010 census, the population was 254,969, making it the fourth-most populous parish in Louisiana. The parish seat is Shreveport, which developed along the Red River.
According to the U.S. Census Bureau, the parish has a total area of 937 square miles (2,430 km), of which 978 square miles (2,530 km) is land and 58 square miles (150 km) (6.2%) is water.
As of the census of 2010, there were 254,969 people, 119,502 households, and 68,900 families residing in the parish. According to 2012 U.S. Census Bureau estimates, Caddo Parish population was 257,093. The population density was 286 people per square mile (110/km²). There were 108,296 housing units at an average density of 123 per square mile (47/km). The racial makeup of the parish was 49.1% White, 40.0% Black or African American, 1.2% Native American, 1.8% Asian, 0.1% Pacific Islander, 0.82% from other races, and 1.8% from two or more races. 5.4% of the population were Hispanic or Latino.
There were 119,502 households out of which 30.90% had children under the age of 18 living with them, 42.20% were married couples living together, 19.80% had a female householder with no husband present, and 33.70% were non-families. 28.90% of all households were made up of individuals and 10.50% had someone living alone who was 65 years of age or older. The average household size was 2.51 and the average family size was 3.11.
In the parish the population was spread out with 26.80% under the age of 18, 10.20% from 18 to 24, 27.40% from 25 to 44, 22.00% from 45 to 64, and 13.70% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 89.70 males. For every 100 females age 18 and over, there were 84.90 males.