Ucon is a city in Bonneville County, Idaho, United States.

[4] According to the United States Census Bureau, the city has a total area of 0.79 square miles (2.05 km2), all of it land.

There were 368 housing units at an average density of 465.8 per square mile (179.8/km2).

14.6% of all households were made up of individuals, and 6.6% had someone living alone who was 65 years of age or older.

There were 288 housing units at an average density of 375.7 per square mile (145.1/km2).

12.9% of all households were made up of individuals, and 4.3% had someone living alone who was 65 years of age or older.