Union is a village in Cass County, Nebraska, United States. The population was 233 at the 2010 census.

Union is located at 40°48′50″N 95°55′20″W / 40.813763°N 95.922336°W / 40.813763; -95.922336 (40.813763, -95.922336).

According to the United States Census Bureau, the village has a total area of 0.2 square miles (0.52 km²), all of it land.

As of the census of 2000, there were 260 people, 102 households, and 78 families residing in the village. The population density was 1,252.8 people per square mile (478.0/km²). There were 112 housing units at an average density of 539.7 per square mile (205.9/km²). 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. Hispanic or Latino of any race were 1.15% of the population.

There were 102 households out of which 35.3% had children under the age of 18 living with them, 67.6% were married couples living together, 4.9% had a female householder with no husband present, and 23.5% were non-families. 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. The average household size was 2.55 and the average family size was 2.94.

Nebraska (ⁱ/nəˈbræskə/) is a state on the Great Plains of the Midwestern United States. Its state capital is Lincoln and its largest city is Omaha, on the Missouri River.

The state is crossed by many historic trails, but it was the California Gold Rush that first brought large numbers here, and it became a state in 1867. Certain landmarks still compete for the notional distinction 'Where the West Begins'.

There are wide variations between winter and summer temperatures, and violent thunderstorms and tornadoes are common. The state is characterized by treeless prairie, ideal for cattle-grazing, and it is a major producer of beef, as well as pork, maize and soybeans. Nebraska is overwhelmingly rural, as the 8th least-densely populated state of the United States.

Ethnically, the largest group are German-Americans, and the state has the biggest Czech-American population per head. During the Great Migration, many African Americans came to Omaha, and they continue to campaign for improved conditions. More recently, Native American activism has increased, with a drive for self-determination in a climate of co-operation with state officials on regional issues. It is traditionally a Republican-voting state.