Donaldsonville (historically French: Lafourche-des-Chitimachas) is a small city in and the parish seat of Ascension Parish in south Louisiana, United States, located along the River Road of the west bank of the Mississippi River. The population was 7,436 at the 2010 census, a decrease of more than 150 from the 7,605 tabulation in 2000. Donaldsonville is part of the Baton Rouge Metropolitan Statistical Area.
According to the United States Census Bureau, the city has a total area of 2.5 square miles (6.5 km), all land. Coming upriver on the Mississippi, Donaldsonville is the point of the first expanse of land beyond the narrow natural levee. The town sits approximately 25 feet above sea level, with excellent drainage.. Donaldsonville is located where Bayou Lafourche, a distributary of the Mississippi River, formerly branched off until the entrance was dammed in 1905.
As of the census of 2000, there were 7,605 people, 2,656 households, and 1,946 families residing in the city. The population density was 2,986.9 people per square mile (1,151.5/km²). There were 2,948 housing units at an average density of 1,157.8 per square mile (446.4/km²).
The racial makeup of the city was 29.82% White, 69.13% African American, 0.12% Native American, 0.12% Asian, 0.37% from other races, and 0.45% from two or more races. Hispanic or Latino of any race were 1.10% of the population.
There were 2,656 households out of which 39.3% had children under the age of 18 living with them, 37.4% were married couples living together, 30.7% had a female householder with no husband present, and 26.7% were non-families. 24.7% of all households were made up of individuals and 11.4% had someone living alone who was 65 years of age or older. The average household size was 2.81 and the average family size was 3.35.
In the city, the population was spread out with 32.1% under the age of 18, 10.6% from 18 to 24, 25.4% from 25 to 44, 19.7% from 45 to 64, and 12.2% who were 65 years of age or older. The median age was 31 years. For every 100 females, there were 81.0 males. For every 100 females age 18 and over, there were 74.6 males.
The median income for a household in the city was $24,084, and the median income for a family was $29,408. Males had a median income of $31,849 versus $17,528 for females. The per capita income for the city was $12,009. About 32.8% of families and 34.8% of the population were below the poverty line, including 49.0% of those under age 18 and 22.2% of those age 65 or over.
Donaldsonville Louisiana neighborhoods include: E Bayou Rd, Hadrin, Jules Drive, Uptown