Fidelity is a village in Jersey County, Illinois, United States, located about thirty-five miles north of Saint Louis, Missouri. As of the 2010 census, the village had a total population of 114.
Fidelity is located at 39°9′17″N 90°9′50″W / 39.15472°N 90.16389°W / 39.15472; -90.16389 (39.154636, -90.163947).
According to the 2010 census, Fidelity has a total area of 0.11 square miles (0.28 km), all land.
As of the census of 2000, there were 105 people, 41 households, and 30 families residing in the village. The population density was 941.2 people per square mile (368.6/km²). There were 44 housing units at an average density of 394.4 per square mile (154.4/km²). The racial makeup of the village was 100.00% White.
There were 41 households, out of which 46.3% had children under the age of 18 living with them, 51.2% were married couples living together, 12.2% had a female householder with no husband present, and 24.4% were non-families. 17.1% of all households were made up of individuals and 12.2% had someone living alone who was 65 years of age or older. The average household size was 2.56 and the average family size was 2.77.
In the village, the population was spread out with 29.5% under the age of 18, 5.7% from 18 to 24, 30.5% from 25 to 44, 25.7% from 45 to 64, and 8.6% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 94.4 males. For every 100 females age 18 and over, there were 94.7 males.
The median income for a household in the village was $17,500, and the median income for a family was $17,083. Males had a median income of $30,625 versus $21,250 for females. The per capita income for the village was $7,798. There were 27.6% of families and 28.2% of the population living below the poverty line, including 29.0% of under eighteens and 13.3% of those over 64.