Wentzville is a suburb of St. Louis that is located in western St. Charles County, Missouri, United States. As of the 2010 census, the city had a total population of 29,070. Population estimates in 2018 have placed the city’s population at 41,164, making it the 16th largest city in Missouri. Wentzville was the fastest growing city in Missouri between 2000 and 2010 by percentage increased, and population estimates since 2010 indicate that Wentzville is on track to continue as the state’s fastest growing city for a second consecutive decade. As the site of the Rotary Park, Wentzville is host to the St. Charles County Fair and the St. Louis Renaissance Festival.
Wentzville is located at 38°48’58” North, 90°51’26” West (38.816010, −90.857198).
According to the United States Census Bureau, the city has a total area of 19.98 square miles (51.75 km), of which 19.96 square miles (51.70 km) is land and 0.02 square miles (0.05 km) is water.
As of the census of 2010, there were 29,070 people, 9,767 households, and 7,852 families residing in the city. The population density was 1,456.4 inhabitants per square mile (562.3/km). There were 10,305 housing units at an average density of 516.3 per square mile (199.3/km). The racial makeup of the city was 89.9% White, 6.0% African American, 0.3% Native American, 1.2% Asian, 0.8% from other races, and 1.9% from two or more races. Hispanic or Latino of any race were 2.7% of the population.
There were 9,767 households of which 51.5% had children under the age of 18 living with them, 65.3% were married couples living together, 11.1% had a female householder with no husband present, 4.0% had a male householder with no wife present, and 19.6% were non-families. 15.6% of all households were made up of individuals and 5% had someone living alone who was 65 years of age or older. The average household size was 2.96 and the average family size was 3.31.
The median age in the city was 31.2 years. 33.7% of residents were under the age of 18; 6.2% were between the ages of 18 and 24; 33.7% were from 25 to 44; 19% were from 45 to 64; and 7.5% were 65 years of age or older. The gender makeup of the city was 48.5% male and 51.5% female.
As of the census of 2000, there were 13,931 people, 2,456 households, and 1,846 families residing in the city. The population density is 478.9 people per square mile (184.9/km²). There are 2,724 housing units at an average density of 189.2 per square mile (73.0/km²). The racial makeup of the city is 84.63% White, 12.02% African American, 0.16% Native American, 0.55% Asian, 0.06% Pacific Islander, 0.52% from other races, 2.06% from two or more races. 1.49% of the population are Hispanic or Latino of any race.
There are 2,456 households out of which 43.5% have children under the age of 18 living with them, 54.5% are married couples living together, 17.1% have a female householder with no husband present, and 24.8% are non-families. 20.7% of all households are made up of individuals and 9.1% have someone living alone who is 65 years of age or older. The average household size is 2.76 and the average family size is 3.20.
In the city, the population is spread out with 31.8% under the age of 18, 9.2% from 18 to 24, 30.7% from 25 to 44, 17.4% from 45 to 64, and 10.8% who are 65 years of age or older. The median age is 31 years. For every 100 females, there are 87.6 males. For every 100 females age 18 and over, there are 82.5 males.
The median income for a household in the city is $47,232, and the median income for a family is $53,082. Males have a median income of $38,423 versus $25,852 for females. The per capita income for the city is $18,039. 11.6% of the population and 10.1% of families are below the poverty line. Out of the total population, 19.1% of those under the age of 18 and 13.3% of those 65 and older are living below the poverty line.