The rear third runs 23 points emptier than the front on busy departures.
Towards Grand Central · Penn Station
50%
front
68%
middle
68%
rear
← front of the train as it arrives
The front third runs 18 points emptier than the rear on busy departures.
Over departures that left at least half full, when a seat is in question. Carriages are numbered from the front in the direction of travel, so this holds whichever way you are going.
How full, by hour
6a
12p
6p
12a
Median load of trains leaving in each hour, over 28 weekdays. The day runs 4am to 4am, as the railroad's does.