St. Ann is a suburb of St. Louis in north St. Louis County, Missouri, United States. The population was 13,020 at the 2010 census.
St. Ann is located at 38°43′38″N 90°23′8″W / 38.72722°N 90.38556°W / 38.72722; -90.38556 (38.727184, -90.385515) in the north-central part of the St. Louis area. St. Ann also borders Lambert-St. Louis International Airport. Municipal neighbors to St. Ann are Bridgeton, Edmundson, Woodson Terrace, Breckenridge Hills, Overland, and a large portion of unincorporated St. Louis County that lies between Maryland Heights and Creve Coeur.
According to the United States Census Bureau, the city has a total area of 3.18 square miles (8.24 km), all land.
As of the census of 2010, there were 13,020 people, 5,894 households, and 3,259 families residing in the city. The population density was 4,094.3 inhabitants per square mile (1,580.8/km). There were 6,496 housing units at an average density of 2,042.8 per square mile (788.7/km). The racial makeup of the city was 69.5% White, 22.1% African American, 0.3% Native American, 2.2% Asian, 3.0% from other races, and 2.8% from two or more races. Hispanic or Latino of any race were 5.7% of the population.
There were 5,894 households of which 28.3% had children under the age of 18 living with them, 31.6% were married couples living together, 17.9% had a female householder with no husband present, 5.8% had a male householder with no wife present, and 44.7% were non-families. 38.4% of all households were made up of individuals and 12% had someone living alone who was 65 years of age or older. The average household size was 2.21 and the average family size was 2.93.
The median age in the city was 37.1 years. 22.4% of residents were under the age of 18; 9.2% were between the ages of 18 and 24; 28% were from 25 to 44; 27.4% were from 45 to 64; and 13% were 65 years of age or older. The gender makeup of the city was 47.5% male and 52.5% female.
As of the census of 2000, there were 13,607 people, 6,190 households, and 3,447 families residing in the city. The population density was 4,352.8 people per square mile (1,678.5/km²). There were 6,554 housing units at an average density of 2,096.6 per square mile (808.5/km²). The racial makeup of the city was 82.71% White, 11.44% African American, 0.28% Native American, 1.99% Asian, 0.01% Pacific Islander, 1.79% from other races, and 1.78% from two or more races. Hispanic or Latino of any race were 4.12% of the population.
There were 6,190 households out of which 25.8% had children under the age of 18 living with them, 37.4% were married couples living together, 14.3% had a female householder with no husband present, and 44.3% were non-families. 37.3% of all households were made up of individuals and 13.2% had someone living alone who was 65 years of age or older. The average household size was 2.19 and the average family size was 2.90.
In the city, the population was spread out with 22.3% under the age of 18, 9.5% from 18 to 24, 31.8% from 25 to 44, 20.2% from 45 to 64, and 16.2% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 93.5 males. For every 100 females age 18 and over, there were 87.8 males.
The median income for a household in the city was $32,351, and the median income for a family was $41,135. Males had a median income of $31,091 versus $24,064 for females. The per capita income for the city was $18,318. About 10.4% of families and 12.8% of the population were below the poverty line, including 19.0% of those under age 18 and 6.8% of those age 65 or over.