Armington is a village in Tazewell County, Illinois, United States.

It is part of the Peoria, Illinois Metropolitan Statistical Area.

According to the 2010 census, Armington has a total area of 0.29 square miles (0.75 km2), all land.

There were 152 housing units at an average density of 530.2 per square mile (204.7/km2).

25.2% of all households were made up of individuals, and 11.9% had someone living alone who was 65 years of age or older.