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The Empire GU was created in July 2012 as a result of the merger of three governing bodies in the Northeastern United States: Northeast Rugby Union, New York State Rugby Conference (NYSRC) and Metropolitan New York Rugby Union (METNYRFU). When formed, Empire GU was one of four pilot Geographical Unions that have been developed by USA Rugby, and the first in the country to have been created by merging multiple former unions. The creation of these new GUs was carried out with the intention of creating a "more streamlined structure, effectively support growth in the game and provide increased member services in local areas". As of 2013, the GU structure ceased to be seen as a pilot program, being fully adopted as the local governance model for Club Rugby moving forward.
Upon creation of the Empire GU, NRU, NYSRC and METNYRFU were all dissolved. The last remaining member of the former NRU, New England Rugby Football Union (NERFU), was not absorbed into the new union, instead becoming a separate GU in its own right. Some NERFU teams, however, continue to compete in Empire GU's league system, namely in the Senior Men's D1, and the Senior Women's D1, D2 and D3.