Founded in 2009, the team made its debut in the Northeast – Atlantic Conference of the National Premier Soccer League (NPSL),[1] the fourth tier of the American Soccer Pyramid, in 2011.

In March 2011, Mass United FC, announced[2] its 2011 NPSL schedule to be played at the City of Lynn's Manning Field.

The club also operated teams in the Bay State Soccer League (BSSL) and the Massachusetts State Soccer League (MSSL), as well as an indoor team in the MSSL.

Mass United FC declared that it will sit out the 2013 NPSL season.

[3] It was later announced the club would be part of the inaugural season of the relaunched American Soccer League in 2014, signing Trinibagonian Kareem Smith.