Union is a village in southeast Cass County, Nebraska, United States.

[6] According to the United States Census Bureau, the village has a total area of 0.21 square miles (0.54 km2), all land.

20.9% of all households were made up of individuals, and 7.7% had someone living alone who was 65 years of age or older.

The racial makeup of the village was 97.31% White, 0.38% Native American, 0.77% Asian, and 1.54% from two or more races.

21.6% of all households were made up of individuals, and 11.8% had someone living alone who was 65 years of age or older.

About 7.0% of families and 5.2% of the population were below the poverty line, including 6.6% of those under the age of eighteen and 8.0% of those 65 or over.