Thomasboro is a village in Champaign County, Illinois, United States. The population was 1,126 at the 2010 census.
Thomasboro is located at 40°14′31″N 88°11′16″W / 40.24194°N 88.18778°W / 40.24194; -88.18778 (40.242025, -88.187745).
According to the 2010 census, Thomasboro has a total area of 1 square mile (2.59 km), all land.
As of the census of 2000, there were 1,233 people, 495 households, and 334 families residing in the village. The population density was 1,191.1 people per square mile (457.8/km²). There were 525 housing units at an average density of 507.2 per square mile (194.9/km²). The racial makeup of the village was 95.38% White, 1.30% African American, 0.24% Native American, 0.73% Asian, 0.08% Pacific Islander, 0.73% from other races, and 1.54% from two or more races. Hispanic or Latino of any race were 1.22% of the population.
There were 495 households out of which 34.9% had children under the age of 18 living with them, 53.3% were married couples living together, 9.9% had a female householder with no husband present, and 32.5% were non-families. 25.9% of all households were made up of individuals and 9.7% had someone living alone who was 65 years of age or older. The average household size was 2.49 and the average family size was 3.03.
In the village, the population was spread out with 27.3% under the age of 18, 7.4% from 18 to 24, 31.8% from 25 to 44, 20.8% from 45 to 64, and 12.7% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 95.7 males. For every 100 females age 18 and over, there were 91.7 males.
The median income for a household in the village was $39,667, and the median income for a family was $47,212. Males had a median income of $31,595 versus $23,182 for females. The per capita income for the village was $17,866. About 4.2% of families and 4.8% of the population were below the poverty line, including 6.6% of those under age 18 and 4.1% of those age 65 or over.