Margaret is a city in St. Clair County, Alabama, United States. At the 2000 census the population was 1,169. As of the 2010 census, the population is 4,428, an increase of 278.8%. Margaret became a city in October 2011.
As of the census of 2010, there were 4,428 people, 1,543 households, and 1,252 families residing in the city. The population density was 476.1 people per square mile (183.7/km²). There were 1,698 housing units at an average density of 182.6 per square mile (70.5/km²). The racial makeup of the town was 77.3% White, 19.3% Black or African American, 0.8% Asian, 0.8% from other races, and 1.5% from two or more races.
There were 1,543 households out of which 44.3% had children under the age of 18 living with them, 66.8% were married couples living together, 9.7% had a female householder with no husband present, and 18.9% were non-families. 15.6% of all households were made up of individuals and 2.3% had someone living alone who was 65 years of age or older. The average household size was 2.87 and the average family size was 3.19.
In the city the population was spread out with 29.9% under the age of 18, 6.7% from 18 to 24, 38.5% from 25 to 44, 19.9% from 45 to 64, and 5.0% who were 65 years of age or older. The median age was 31 years. For every 100 females there were 99.8 males. For every 100 females age 18 and over, there were 98.3 males.
The median income for a household in the town was $52,111, and the median income for a family was $52,463. Males had a median income of $41,941 versus $34,242 for females. The per capita income for the town was $19,984. About 3.3% of families and 6.2% of the population were below the poverty line, including 1.6% of those under age 18 and 14.0% of those age 65 or over.