|Elevation||741 ft (226 m)|
|Area||0.26 sq mi (1 km2)|
|- land||0.26 sq mi (1 km2)|
|- water||0.00 sq mi (0 km2)|
|Density||646.2 / sq mi (249 / km2)|
|- summer (DST)||CDT (UTC-5)|
|Area code||815 & 779|
|Wikimedia Commons: Dover, Illinois|
Dover is located at (41.435327, -89.395830).
According to the 2010 census, the village has a total area of 0.26 square miles (0.67 km2), all land.
As of the census of 2000, there were 172 people, 62 households, and 53 families residing in the village. The population density was 641.6 people per square mile (246.0/km²). There were 68 housing units at an average density of 253.7 per square mile (97.2/km²). The racial makeup of the village was 99.42% White, and 0.58% from two or more races. Hispanic or Latino of any race were 0.58% of the population.
There were 62 households out of which 37.1% had children under the age of 18 living with them, 69.4% were married couples living together, 9.7% had a female householder with no husband present, and 14.5% were non-families. 11.3% of all households were made up of individuals and 6.5% had someone living alone who was 65 years of age or older. The average household size was 2.77 and the average family size was 3.00.
In the village the population was spread out with 29.1% under the age of 18, 5.2% from 18 to 24, 27.3% from 25 to 44, 24.4% from 45 to 64, and 14.0% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 112.3 males. For every 100 females age 18 and over, there were 96.8 males.
The median income for a household in the village was $41,875, and the median income for a family was $42,500. Males had a median income of $31,250 versus $20,500 for females. The per capita income for the village was $14,070. About 8.3% of families and 5.7% of the population were below the poverty line, including none of those under the age of eighteen and 29.4% of those sixty five or over.
- "Geographic Identifiers: 2010 Demographic Profile Data (G001): Dover village, Illinois". U.S. Census Bureau, American Factfinder. Retrieved November 14, 2013.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- "Places: Illinois". 2010 Census Gazetteer Files. United States Census Bureau. Retrieved 2012-10-13.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.