A centerpiece of Palmer Square is the post office, which sits in the square's most prominent position.
 Built during the New Deal, it is known for its mural, Columbia under the Palm, painted by Karl Free for the Section of Painting and Sculpture.
 The mural has come under criticism for its depiction of European settlers bringing learning to enlighten the indigenous peoples.
 The caption of the mural reads:
America!
with Peace and Freedom blest, 
Science invites, urged by the Voice divine, 
Pant for true Fame and scorn inglorious rest, 
Exert thyself till every Art be thine.

As Princeton expanded, and especially the use of its name as a mailing address for areas of surrounding towns, a new main Princeton post office was opened at 213 Carnegie Center in West Windsor, New Jersey.
 The Palmer Square post office was first put up for sale in 1997 as the Postal Service sought to downsize from the 11,000 square foot facility.
 Those efforts intensified in 2011 when employees were informed that the office would relocate to a smaller space, but that sale was blocked by the New Jersey Historic Preservation Office.
 The building was finally sold in 2013 to LCOR Ventures and plans were announced to open a new post office behind a proposed 7-11 store at 259 Nassau Street.
A centerpiece of Palmer Square is the post office, which sits in the square's most prominent position.  Built during the New Deal, it is known for its mural, Columbia under the Palm, painted by Karl Free for the Section of Painting and Sculpture.  The mural has come under criticism for its depiction of European settlers bringing learning to enlighten the indigenous peoples.  The caption of the mural reads:
America! with Peace and Freedom blest, 
Science invites, urged by the Voice divine, 
Pant for true Fame and scorn inglorious rest, 
Exert thyself till every Art be thine.
As Princeton expanded, and especially the use of its name as a mailing address for areas of surrounding towns, a new main Princeton post office was opened at 213 Carnegie Center in West Windsor, New Jersey.  The Palmer Square post office was first put up for sale in 1997 as the Postal Service sought to downsize from the 11,000 square foot facility.  Those efforts intensified in 2011 when employees were informed that the office would relocate to a smaller space, but that sale was blocked by the New Jersey Historic Preservation Office.  The building was finally sold in 2013 to LCOR Ventures and plans were announced to open a new post office behind a proposed 7-11 store at 259 Nassau Street.
Palmer Square