The following Democratic candidates were elected to office in November 2017:
- Cathy Iino – first selectwoman
- Lou Annino, Jr. – selectman
- Dawn Rees Mooney – town clerk
- Claudette Lagasse – town treasurer
- Gwenne Celmer – Board of Finance
- Annie Stirna – Board of Finance
- Matt Stillman – Board of Assessment Appeals
- Geoff Cook – Planning and Zoning
- Joan Gay – P&Z Alternate
- Brian Young – Zoning Board of Appeals
- Ben Charney – Zoning Board of Appears Alternate
- Bryan Mahoney – Board of Fire Commissioners
- Kathleen Zandi – Board of Education
Killingworth Democratic Town Committee 