Fulton County is a county in the U.S. state of Illinois. According to the 2010 census, it had a population of 37,069. Its county seat is Lewistown, and the largest city is Canton.
According to the US Census Bureau, the county has a total area of 883 square miles (2,290 km), of which 866 square miles (2,240 km) is land and 17 square miles (44 km) (1.9%) is water.
Fulton County is the site of Dickson Mounds Museum, a state museum of Native American daily life in the Illinois River valley.
As of the 2010 United States Census, there were 37,069 people, 14,536 households, and 9,744 families residing in the county. The population density was 42.8 inhabitants per square mile (16.5/km). There were 16,195 housing units at an average density of 18.7 per square mile (7.2/km). The racial makeup of the county was 93.4% white, 3.4% black or African American, 0.4% American Indian, 0.3% Asian, 1.6% from other races, and 0.9% from two or more races. Those of Hispanic or Latino origin made up 2.4% of the population. In terms of ancestry, 23.7% were German, 19.1% were American, 14.0% were English, and 13.2% were Irish.
Of the 14,536 households, 29.3% had children under the age of 18 living with them, 52.0% were married couples living together, 10.2% had a female householder with no husband present, 33.0% were non-families, and 28.1% of all households were made up of individuals. The average household size was 2.37 and the average family size was 2.86. The median age was 41.9 years.
The median income for a household in the county was $41,268 and the median income for a family was $50,596. Males had a median income of $41,376 versus $28,596 for females. The per capita income for the county was $20,309. About 9.9% of families and 13.8% of the population were below the poverty line, including 22.2% of those under age 18 and 8.0% of those age 65 or over.