Millstadt is a village in St. Clair County, Illinois, United States, and a suburb of St. Louis, located at the crossing of Illinois Routes 163 (locally, “Jefferson Avenue”) and 158 (locally, “Washington Avenue”). The village is known for its German heritage, with more than half its people of German descent. The population was 4,011 at the 2010 census, but a more recent study in July 2018 estimated the number at 3,885.
According to the 2010 census, the village has a total area of 3.58 square miles (9.3 km), of which 3.41 square miles (8.8 km) (or 95.25%) is land and 0.17 square miles (0.44 km) (or 4.75%) is water.
The town center is formed by the intersection of two state highways. Illinois Route 158, or Washington Avenue, leads west to Columbia and east to Belleville. The other main street is Jefferson Avenue, the north part of which forms the southern end of Illinois Route 163, leading north to Centreville, where it intersects highways providing access to St. Louis. The south end of Jefferson Avenue, as it leaves Millstadt, becomes Floraville Road.
As of the census of 2000, there were 2,794 people, 1,148 households, and 813 families residing in the village. The population density was 2,511.9 people per square mile (971.9/km²). There were 1,196 housing units at an average density of 1,075.2 per square mile (416.0/km²). The racial makeup of the village was 99% White, 0% Native American, 1% Asian, 0% from other races, and 0% from two or more races. Hispanic or Latino of any race were 0% of the population.
There were 1,148 households out of which 31.8% had children under the age of 18 living with them, 59.1% were married couples living together, 8.9% had a female householder with no husband present, and 29.1% were non-families. 25.3% of all households were made up of individuals and 12.5% had someone living alone who was 65 years of age or older. The average household size was 2.43 and the average family size was 2.92.
In the village, the population was spread out with 23.7% under the age of 18, 7.6% from 18 to 24, 28.6% from 25 to 44, 22.9% from 45 to 64, and 17.3% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 91.5 males. For every 100 females age 18 and over, there were 87.5 males.
The median income for a household in the village was $47,824, and the median income for a family was $56,378. Males had a median income of $40,893 versus $27,196 for females. The per capita income for the village was $21,914. About 3.2% of families and 4.0% of the population were below the poverty line, including 5.9% of those under age 18 and 5.1% of those age 65 or over.
Millstadt Illinois neighborhoods include: Floraville Rd, Floraville Road, Parkview Manor, Washington/Laurel/Harrison