Union County
There are 8 County offices
School districts
- Berkeley Heights Township School District (4)
- Clark Township School District (5)
- Cranford Township School District (6)
- Garwood Borough School District (6)
- Hillside Township School District (5)
- Kenilworth Borough School District (6)
- Linden City School District (6)
- Mountainside Borough School District (4)
- New Providence Borough School District (6)
- North Plainfield Borough School District (5)
- Plainfield City School District (6)
- Rahway City School District (6)
- Roselle Borough School District (6)
- Roselle Park Borough School District (6)
- Scotch Plains-Fanwood Regional School District (5)
- Springfield Township School District (6)
- Summit City School District (4)
- Union Township School District (15)
- Westfield Town School District (7)
- Winfield Township School District (6)
Elected Offices
| Position title | Next election date | Filing window |
| Union County Clerk | Nov 03, 2020 | Jan 01, 2020 - Jun 02, 2020 |
| Union County Freeholder, Position 4 | Nov 02, 2021 | Jan 01, 2021 - Jun 01, 2021 |
| Union County Freeholder, Position 5 | Nov 02, 2021 | Jan 01, 2021 - Jun 01, 2021 |
| Union County Freeholder, Position 6 | Nov 02, 2021 | Jan 01, 2021 - Jun 01, 2021 |
| Union County Freeholder, Position 7 | Nov 03, 2020 | Jan 01, 2020 - Jun 02, 2020 |
| Union County Freeholder, Position 8 | Nov 03, 2020 | Jan 01, 2020 - Jun 02, 2020 |
| Union County Freeholder, Position 9 | Nov 03, 2020 | Jan 01, 2020 - Jun 02, 2020 |
| Union County Sheriff | Nov 03, 2020 | Jan 01, 2020 - Jun 02, 2020 |