|Crawford County, Illinois|
Crawford County Courthouse in Robinson
Location in the U.S. state of Illinois
Illinois's location in the U.S.
|Named for||William H. Crawford|
|• Total||446 sq mi (1,155 km2)|
|• Land||444 sq mi (1,150 km2)|
|• Water||2.2 sq mi (6 km2), 0.5%|
|• ( 2010)||19,817|
|• Density||45/sq mi (17/km2)|
|Time zone||Eastern: UTC−5/ −4|
Crawford County was formed in Illinois Territory on December 31, 1816 out of Edwards County. At the time of its formation, it encompassed about one third of the State, but it was reduced to its present borders by 1831 as it spawned new counties. It was named in honor of William H. Crawford,  from Georgia, who was serving as Secretary of War and Secretary of the Treasury at the time. Crawford County was home to several battles between the settlers and Indians, and also the location of the only woman ever hanged in Illinois.
According to the U.S. Census Bureau, the county has a total area of 446 square miles (1,160 km2), of which 444 square miles (1,150 km2) is land and 2.2 square miles (5.7 km2) (0.5%) is water.  Some of the county's eastern border is defined by the Wabash River.
|Climate chart ( explanation)|
In recent years, average temperatures in the county seat of Robinson have ranged from a low of 21 °F (−6 °C) in January to a high of 89 °F (32 °C) in July, although a record low of −23 °F (−31 °C) was recorded in December 1989 and a record high of 114 °F (46 °C) was recorded in July 1954. Average monthly precipitation ranged from 2.45 inches (62 mm) in January to 4.67 inches (119 mm) in May. 
- Clark County - north
- Sullivan County, Indiana - east
- Knox County, Indiana - southeast
- Lawrence County - south
- Richland County - southwest
- Jasper County - west
|U.S. Decennial Census
1790-1960  1900-1990 
1990-2000  2010-2013 
As of the 2010 United States Census, there were 19,817 people, 7,763 households, and 5,154 families residing in the county.  The population density was 44.7 inhabitants per square mile (17.3/km2). There were 8,661 housing units at an average density of 19.5 per square mile (7.5/km2).  The racial makeup of the county was 92.8% white, 4.7% black or African American, 0.5% Asian, 0.2% American Indian, 0.8% from other races, and 0.9% from two or more races. Those of Hispanic or Latino origin made up 1.8% of the population.  In terms of ancestry, 25.0% were German, 14.4% were American, 12.4% were Irish, and 9.9% were English. 
Of the 7,763 households, 28.5% had children under the age of 18 living with them, 52.6% were married couples living together, 9.4% had a female householder with no husband present, 33.6% were non-families, and 29.1% of all households were made up of individuals. The average household size was 2.36 and the average family size was 2.88. The median age was 41.7 years. 
The median income for a household in the county was $41,434 and the median income for a family was $51,218. Males had a median income of $40,050 versus $30,870 for females. The per capita income for the county was $21,545. About 11.1% of families and 16.9% of the population were below the poverty line, including 27.0% of those under age 18 and 8.2% of those age 65 or over. 
Crawford County is divided into ten townships:
Although Crawford County was solidly Democratic before the Populist-backed candidacy of William Jennings Bryan in 1896, it has since become strongly Republican. The last Democrat to gain a majority in the county was Lyndon Johnson in his 1964 landslide, although Bill Clinton won a plurality in 1992. Like all the rural Upland South, Crawford County has shown dramatic swings against the Democratic Party in recent elections, with Hillary Clinton’s 22.8 percent in 2016 the worst performance ever by a Democrat.
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- Perrin, p. 42.
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- United States National Atlas