Bismarck is a village in Newell Township, Vermilion County, Illinois, United States. It is part of the Danville, Illinois Metropolitan Statistical Area. The population was 542 at the 2000 census.
Bismarck is located at 40°15′45″N 87°36′36″W / 40.26250°N 87.61000°W / 40.26250; -87.61000 (40.262371, -87.609876), about eight miles north of the county seat of Danville.
According to the 2010 census, Bismarck has a total area of 0.74 square miles (1.92 km), all land.
As of the census of 2000, there were 542 people, 204 households, and 158 families residing in the village. The population density was 797.8 people per square mile (307.7/km²). There were 210 housing units at an average density of 309.1 per square mile (119.2/km²). The racial makeup of the village was 99.63% White, 0.18% Native American, and 0.18% from two or more races.
There were 204 households out of which 42.2% had children under the age of 18 living with them, 69.6% were married couples living together, 7.4% had a female householder with no husband present, and 22.5% were non-families. 19.6% of all households were made up of individuals and 11.3% had someone living alone who was 65 years of age or older. The average household size was 2.66 and the average family size was 3.08.
In the village, the population was spread out with 27.9% under the age of 18, 5.9% from 18 to 24, 30.6% from 25 to 44, 23.6% from 45 to 64, and 12.0% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 97.1 males. For every 100 females age 18 and over, there were 88.9 males.
The median income for a household in the village was $41,731, and the median income for a family was $45,000. Males had a median income of $36,750 versus $21,667 for females. The per capita income for the village was $15,255. About 3.4% of families and 4.2% of the population were below the poverty line, including 6.9% of those under age 18 and none of those age 65 or over.