SOUTH PLAINFIELD, NJ–Week three of the 2021 Union County High School Football season saw things get a bit shaken up as Cranford moved up to 2nd in the poll following its 45-8 victory over Summit. Elizabeth, Linden, and Westfield also moved up while Scotch Plains-Fanwood dropped after its loss to North Hunterdon (28-3). Current record in parenthesis.
- Union (2-1)
- Cranford (2-0)
- Scotch Plains-Fanwood (2-2)
- Summit (2-1)
- Hillside (1-1)
- Elizabeth (2-1)
- Westfield (2-0)
- Linden (2-0)
- New Providence (1-1)
- Brearley (2-0)
Other teams considered: Rahway (0-2), Plainfield (0-2), Governor Livingston (0-1), Roselle Park (1-1), A.L. Johnson (1-1), and Jonathan Dayton (1-0).
