| Place Name | Erin |
| Place Type | Town |
| ZIP Code(s) | 53017 53027 53029 53033 |
| County | Washington County |
| Area Code(s) | 262,274,920 |
| Timezone | Central Daylight Time (CDT) |
| Population (2021) | 3,819 |
| Majority Ethnicity | White 98.35% |
| Metro/Micro Stats Area | Milwaukee-Waukesha, WI |
| US Congressional District(s) | Wisconsin 5th |
| State Assembly Districts | 22,39 |
| State Senate Districts | 8,13 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 98.35% |
| African American | 0.27% |
| Hispanic | 0% |
| Asian | 0.75% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.64% |