Hidalgo is a village in Jasper County, Illinois, United States. The population was 123 at the 2000 census.Hidalgo is located at 39°9′24″N 88°9′3″W / 39.15667°N 88.15083°W / 39.15667; -88.15083.According to the 2010 census, Hidalgo has a total area of 0.34 square miles, all land.As of the census of 2000, there were 123 people, 50 households, and 31 families residing in the village. The population density was 358.2 people per square mile. There were 62 housing units at an average density of 180.5 per square mile. The racial makeup of the village was 100.00% White.There were 50 households out of which 34.0% had children under the age of 18 living with them, 48.0% were married couples living together, 6.0% had a female householder with no husband present, and 38.0% were non-families. 34.0% of all households were made up of individuals and 22.0% had someone living alone who was 65 years of age or older. The average household size was 2.46 and the average family size was 3.16.