Union Grove is a very small village located in the state of Wisconsin. With a population of 5,085 people and two associated neighborhoods, Union Grove is the 167th largest community in Wisconsin.

The population of Union Grove is very well educated relative to most cities and towns in the nation, where the average community has 21.84% of its adult population holding a 4-year degree or higher: 35.53% of adults in Union Grove have a bachelor's degree or even advanced degree.

The per capita income in Union Grove in 2022 was $39,143, which is upper middle income relative to Wisconsin and the nation. This equates to an annual income of $156,572 for a family of four. However, Union Grove contains both very wealthy and poor people as well.

Union Grove is a somewhat ethnically-diverse village. The people who call Union Grove home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Union Grove residents report their race to be White, followed by Black or African-American. Important ancestries of people in Union Grove include German, Irish, Polish, English, and Scandinavian.

The most common language spoken in Union Grove is English. Other important languages spoken here include Polish and Chinese.