Junction City is a village in Marion County, Illinois, United States.

As of the census[5] of 2000, there were 559 people, 207 households, and 158 families residing in the village.

There were 226 housing units at an average density of 334.7 per square mile (129.2/km2).

The racial makeup of the village was 98.57% White, 0.36% Asian, and 1.07% from two or more races.

20.3% of all households were made up of individuals, and 11.6% had someone living alone who was 65 years of age or older.