Six MBTA bus routes – 9, 10, 39, 55, 501, and 504 – use a westbound stop at St. James Avenue at the southwest corner of Copley Square.

[1] The ornate wrought-iron head house next to the Boston Public Library was designed by the firm Fox, Jenny & Gale.

[4] Originally Copley had light blue and white tile mosaic for the station name on the walls; however, none of these have survived.

[6] Track realignment at Arlington and Copley, which will deal with Green Line vehicle doors becoming stuck on the platforms, is expected to take place in the mid-2020s.

Based on this, the Federal Transit Administration issued a decision of "no adverse effect", with which the Massachusetts Historical Commission concurred in January 2004.

"[8] On December 30, 2004, the FTA issued a Finding Of No Significant Impact (FONSI), concluding that alternate elevator locations were infeasible to construct or violated the Americans with Disabilities Act of 1990 by forcing handicapped riders onto a longer entrance route.

On December 28, 2005, a district court rejected the NABB and BPA's arguments, finding that the FTA had properly determined that the project would have "no adverse effect" and that the public interest would be served by the speedy renovation of the station.

[9][10] Construction resumed in December 2009, with the permission of church leaders, after automated monitoring systems were installed.