| Department | Name | Position | Telephone |
| ADA Compliance | Deirdre Caruso | ADA Compliance Coordinator | 203-888-2511 |
| Animal Control |
|
| 203-389-5991 |
| Blight Enforcement | Mike Marganski | Blight Enforcement Officer | 203-828-1264 |
| Board of Education | Michael Wilson | Superintendent | 203-888-4564 |
| Building Inspector | Jim Baldwin | Building Inspector | 203-888-3545 |
| Elyse Callaghan | Code Compliance Assistant | 203-888-3545 |
| Colleen Kochan | Development & Enforcement Assistant |
|
| Community Services | Mary McNelis | Community Services Director | 203-888-0406 |
| Tara Miller | Community Services Assistant | 203-888-0406 |
| Zack Philippas | Recreation Program Manager | 203-888-0406 |
|
| Senior Services Director | 203-888-0406 |
|
| Municipal Aide | 203-881-5026 |
| Economic Development |
| Economic Development Director | 203-828-1279 |
| Finance | Doug Thomas | Director of Finance | 203-888-0581 |
| Lorrie Matusovich | Accounting Manager | 203-888-0581 |
| Victoria Geruntho | Fiscal Aide/Accounts Payable | 203-888-0581 |
| Lisa Collon | Payroll/Benefits Coordinator | 203-888-0581 |
| Fire Marshal | Tim Willis | Fire Marshal | 203-881-5010 |
| Robert Rockwell | Deputy Fire Marshal | 203-881-5010 |
| First Selectman’s Office | Annmarie Drugonis | First Selectwoman | 203-888-2511 |
| Rory Burke | Chief of Staff | 203-888-2511 |
| Steven Perry | Assistant to the First Selectwoman | 203-888-2511 |
| Human Resources | Christopher Pelosi | Human Resources Director | 203-828-1266 |
| Inland Wetlands Enforcement | Mike Marganski | Inland Wetlands Enforcement Officer | 203-828-1278 |
|
| Inland Wetlands Enforcement Officer | 203-828-1278 |
| Operations | Anthony Caserta | Director of Operations | 203-888-2511 |
| Deidre Caruso | Manager of Operations and Grants | 203-888-2511 |
| Public Works | Anthony DePrimo | Public Works Director | 203-735-6028 |
| Frank Gabianelli | Public Works Lead | 203-735-6028 |
| Deirdre Caruso | Public Works Assistant | 203-735-6028 |
| Registrar of Voters |
| Democratic Registrar | 203-881-5039 |
| Elise Woods | Republican Registrar | 203-881-5039 |
| Seymour Ambulance Association | Kyle Kelley | Executive Director | 203-888-8843 |
| Seymour Fire Department | Mike Lombardi | Fire Chief |
|
| Seymour Police Department | Paul Satkowski | Chief of Police | 203-881-7633 |
|
| Deputy Chief of Police | 203-881-7633 |
| Roberto Rinaldi | Deputy Chief of Police |
|
| Nadia DiMatteo-Harkins | Administrative Assistant to the Chief of Police | 203-881-7633 |
| Caroline Spaulding | Records Clerk | 203-881-7612 |
| Seymour Public Library | Suzanne Garvey | Library Director | 203-888-3903 |
| Tax Assessor | Joe Kusiak | Tax Assessor | 203-881-5013 |
| Tara Ahern | Assistant Tax Assessor | 203-881-5013 |
| Tax Collector | Dana Flach | Tax Collector | 203-888-0517 |
| Sue Boland | Assistant Tax Collector | 203-888-0517 |
| Town Clerk | Lianna McMurray | Town Clerk | 203-888-0519 |
| Veronica Hoffman | Assistant Town Clerk | 203-888-0519 |
| Town Historian | Marian O'Keefe | Town Historian | 203-888-5337 |
| Town Planner |
| Town Planner | 203-881-5008 |
| Zoning Enforcement |
| Zoning Enforcement Officer | 203-881-5007 |
