[3] In March 2018, it was revealed that Brennan had been named executive vice-president of York Sports & Entertainment back in January.

[5] On May 5, 2018, York Region was one of four groups accepted by the Canadian Soccer Association for professional club membership.

[11] The club adopted the name York9 FC to represent the nine municipalities that make up York Region – Aurora, East Gwillimbury, Georgina, King, Markham, Newmarket, Richmond Hill, Vaughan, and Whitchurch-Stouffville.

[12] On July 27, 2018, York9 announced executive vice president of soccer operations Jimmy Brennan as the club's first head coach.

[25] On December 11, 2020, the club was rebranded as York United FC, adopting a new crest and colour scheme along with the name change.

While the original club name exclusively targeted York Region, the new branding also represents the City of Toronto.

Following the season, head coach Jim Brennan's tenure at the club ended after it was announced November 23, 2021, that his contract would not be extended.

[30] On November 30, 2023, the Canadian Premier League announced that Mexican-based Game Plan Sports Group had purchased York United with immediate effect.

[31][32][33] On May 21, 2024, manager Martin Nash was relieved of his head coaching duties and replaced by Mauro Eustáquio on an interim basis.

[40] Initially, the club had planned to use Alumni Field, on the same campus, while York Lions Stadium was being renovated for use at the end of the season.

[41] Before the start of the 2021 season, the stadium was renovated with a larger, artificial turf pitch and the removal of the athletic track which surrounded the playing surface.

[44] In March 2022, Woodbine Racetrack announced plans to add an 8,000 seat soccer-specific stadium and adjoining training facilities in the northeast corner of their property in Rexdale, Etobicoke; this would be the presumed new home of York United and possibly house a future professional women's soccer club.

A blue element on top of the shield symbolizes Lake Ontario, a body of water that rivers in York Region and Toronto flow into.

[19] Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.