Court Square is the current terminus of the G train at all times. Until 2001 G trains were extended to 71-Continental Avenues during rush hours and middays. When the 63 Street Connector opened in 2001 G train service down Queens Blvd was flipped with trains extended during weekday evenings, nights, and weekends. This was a bit of a ghost service because most weekends track work on the Queens Blvd line forces back to terminate at Court Square anyway so service was in reality only extended really during weekday evenings and nights. The service cuts of 2010 brought the G train's extension officially off the books and it now terminates at Court Square at all times. With the 63 Street connector opening in 2001 the MTA insituted a free MetroCard Transfer to the 7 train station elevated directly above the G trian station. In June 2011, an in system transfer was completed with new glass escalator/elevator and staircase up through the sidewalk from the G train's underground mezzanine up to the above ground 7 trains mezzanine.
The station itself is well suited to be a terminal with a single island platform and full length mezzanine area above. The island platform has a green trimline with Court Square wirtten beneath it. In the middle of the mezzanine is the passageway beneath the Citigroupbuilding, 1 Court Square that built a connection to the E and M trains at 23 Street-Ely Avenue that opened around 1990. At the southern end of the platform is the new transfer to the 7 train via escalators, a staircase and an elevator (this elevator doesn't lead to an accessible transfer, the G train lacks a platform elevator. These are inside a modern, glass enclosure through the sidewalk. A Two high exit turnstiles lead out to a single normal streetstair next to the modern glass transfer along Jackson Avenue just west of 23 Street across from 45th Roads. This exit was closed for the installation of the new transfer to the 7 train from January 2009 to 2011. This required walking passengers using the MetroCard transfer to walk an extra block. At the opposite end of the platform and mezzanine is a larger fare control area with only high entrance/exit equipment this leads out to two street stairs. One is a modern staircase with a glass back in the plaza in front of 1 Court Square. This entrance until 2010 was closed on nights and weekends. On the opposite side of the street (a bit farther down the block) is a conventional streetstair up to the SE corner of Court Square and Jackson Avenue.