St. Francisville, Illinois
|Area||0.78 sq mi (2 km2)|
|- land||0.75 sq mi (2 km2)|
|- water||0.03 sq mi (0 km2)|
|Density||1,017.3 / sq mi (393 / km2)|
|- summer (DST)||CDT (UTC-5)|
|Wikimedia Commons: St. Francisville, Illinois|
St. Francisville is located at (38.592887, -87.648808).
According to the 2010 census, the city has a total area of 0.78 square miles (2.0 km2), of which 0.75 square miles (1.9 km2) (or 96.15%) is land and 0.03 square miles (0.078 km2) (or 3.85%) is water.
As of the census of 2000, there were 759 people, 317 households, and 221 families residing in the city. The population density was 1,017.3 people per square mile (390.7/km²). There were 348 housing units at an average density of 466.4 per square mile (179.2/km²). The racial makeup of the city was 99.21% White, 0.13% African American, and 0.66% from two or more races.
There were 317 households out of which 34.1% had children under the age of 18 living with them, 52.4% were married couples living together, 12.3% had a female householder with no husband present, and 30.0% were non-families. 27.8% of all households were made up of individuals and 12.3% had someone living alone who was 65 years of age or older. The average household size was 2.39 and the average family size was 2.89.
In the city the population was spread out with 26.0% under the age of 18, 8.2% from 18 to 24, 27.4% from 25 to 44, 22.3% from 45 to 64, and 16.2% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 92.2 males. For every 100 females age 18 and over, there were 90.5 males.
The median income for a household in the city was $25,543, and the median income for a family was $29,688. Males had a median income of $30,417 versus $15,938 for females. The per capita income for the city was $12,955. About 19.7% of families and 21.1% of the population were below the poverty line, including 41.4% of those under age 18 and 3.2% of those age 65 or over.
As of the census of 2010 the population of St. Francisville was 697. 
St. Francisville is noted for a locally grown variety of popcorn, trademarked as Black Jewell for the color of the corn kernels. The popcorn packer attributes the varietal snack food to development work in the "mid 1960's." St. Francisville can also be noted for the drilling of sweet crude oil. One notable oil drilling company is Paddget Producing, which was run by William C. Padgett, until his death in 2014.
- William Phipps, retired actor and film producer was born in St. Francisville in 1922.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- "2010 Census U.S. Gazetteer Files for Places – Illinois". United States Census. Retrieved 2012-10-13.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- "2010 US Census Data". 2010 US Census Data. Retrieved 2014-01-10.
- "Black Jewell: American Grown/American Owned". Black Jewell Popcorn Inc. Retrieved 2012-08-24.