| Place Name | Seymour |
| Place Type | Town |
| ZIP Code(s) | 06483 |
| County | New Haven County |
| Area Code(s) | 203,475 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 16,731 |
| Majority Ethnicity | White 84.14% |
| Metro/Micro Stats Area | New Haven-Milford, CT |
| US Congressional District(s) | Connecticut 3rd |
| State House Districts | 105 |
| State Senate Districts | 21,32 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 84.14% |
| African American | 2.69% |
| Hispanic | 0.14% |
| Asian | 1.5% |
| Native American | 0.12% |
| Hawaiin/Pacific Islander | 11.42% |