Ferguson is a city in St. Louis County, Missouri, United States. It is part of the Greater St. Louis metropolitan area. The population was 21,203 at the 2010 census.
According to the United States Census Bureau, the city has a total area of 6.20 square miles (16.06 km), of which 6.19 square miles (16.03 km) is land and 0.01 square miles (0.03 km) is water.
The population of Ferguson grew rapidly during the late nineteenth century. In 1880 the population of the then Ferguson Station was 185 people. By 1890 the population was recorded as being 750 and only four years later it had increased to 1200.
The population of Ferguson continued to grow rapidly during the first six decades of the twentieth century, from 1,015 people in 1900 to 22,149 people in 1960, an average growth rate of 5% per year. Since 1960 the population has remained nearly constant.
The ethnic composition of Ferguson has shifted, however. In 1970, 99% of the population of Ferguson was white and 1% black. In 1980, the proportion of white residents went down to 85%, whereas the proportion of black residents rose to 14%. In 1990, residents of Ferguson who were identified in the U.S. Census as white comprised 73.8% of the total, while those identified as black made up 25.1%. The remainder, 1.1%, identified with other racial categories. In the 2000 U.S. Census, 44.7% were white and 52.4% were African-American, now the majority ethnicity.
As of the 2010 U.S. Census, there were 21,203 people, 8,192 households, and 5,500 families residing in the city. The population density was 3,425.4 inhabitants per square mile (1,322.6/km). There were 9,105 housing units at an average density of 1,470.9 per square mile (567.9/km). The racial makeup of the city was 67.4% black, 29.3% white, 0.5% Asian, 0.4% Native American, 0.4% from other races, and 2.0% from two or more races. Hispanic and Latino of any race were 1.2% of the population.
There were 8,192 households of which 39.1% had children under the age of 18 living with them, 29.6% were married couples living together, 31.5% had a female householder with no husband present, 6.1% had a male householder with no wife present, and 32.9% were non-families. 28.2% of all households were made up of individuals and 7.4% had someone living alone who was 65 years of age or older. The average household size was 2.56 and the average family size was 3.12.
The median age in the city was 33.1 years. 28.7% of residents were under the age of 18; 10.4% were between the ages of 18 and 24; 25.2% were from 25 to 44; 25.3% were from 45 to 64; and 10.3% were 65 years of age or older. The gender makeup of the city was 44.8% male and 55.2% female.