| Place Name | Union (Door County) |
| Place Type | Town |
| ZIP Code(s) | 54204 54213 54217 |
| County | Door County |
| Area Code(s) | 274,920 |
| Timezone | Central Daylight Time (CDT) |
| Population (2021) | 926 |
| Majority Ethnicity | White 98.7% |
| US Congressional District(s) | Wisconsin 8th |
| State Assembly Districts | 1 |
| State Senate Districts | 1 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 98.7% |
| African American | 0.22% |
| Hispanic | 0.11% |
| Asian | 0.11% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.87% |