| Place Name | Willimantic |
| Place Type | Census Designated Place |
| ZIP Code(s) | 06226 |
| County | Windham County |
| Area Code(s) | 860,959 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 17,281 |
| Population Growth Rate (2010-19) | 2.32% |
| Majority Ethnicity | White 53.84% |
| Metro/Micro Stats Area | Worcester, MA-CT |
| US Congressional District(s) | Connecticut 2nd |
| State House Districts | 48,49 |
| State Senate Districts | 29 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 53.84% |
| African American | 5.37% |
| Hispanic | 0.5% |
| Asian | 1.62% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 38.67% |