Hartsburg is a village in Logan County, Illinois, United States. The population was 314 at the 2010 census.Hartsburg is located at 40°15′4″N 89°26′27″W / 40.25111°N 89.44083°W / 40.25111; -89.44083.According to the 2010 census, Hartsburg has a total area of 0.14 square miles, all land.Per the 2010 United States Census, Hartsburg had 314 people. Among non-Hispanics this includes 300 White & 5 from two or more races. The Hispanic or Latino population included 9 people.There were 128 households out of which 28.1% had children under the age of 18 living with them, 50.8% were married couples living together, 8.6% had a female householder with children & no husband present, and 28.9% were non-families. 25.8% of all households were made up of individuals and 28.9% had someone who was 65 years of age or older.The population was spread out with 77.4% over the age of 18 and 15.3% who were 65 years of age or older. The median age was 39.5 years. The gender ratio was 48.