Question: What county is Princeton Stadium located in?

Context articles: 2003 Princeton Tigers football team
2005 Princeton Tigers football team
2004 Princeton Tigers football team
2009 Princeton Tigers football team
2007 Princeton Tigers football team
2006 Princeton Tigers football team
2000 Princeton Tigers football team
2002 Princeton Tigers football team
2001 Princeton Tigers football team
Princeton, New Jersey

The 2003 Princeton Tigers football team represented Princeton University in the 2003 NCAA Division I-AA football season.
 The team was coached by Roger Hughes and played their home games at Princeton Stadium in Princeton, New Jersey.
 They were members of the Ivy League.
The 2005 Princeton Tigers football team represented Princeton University in the 2005 NCAA Division I FCS football season.
 The team was coached by Roger Hughes and played their home games at Princeton Stadium in Princeton, New Jersey.
 They were members of the Ivy League.
The 2004 Princeton Tigers football team represented Princeton University in the 2004 NCAA Division I-AA football season.
 The team was coached by Roger Hughes and played their home games at Princeton Stadium in Princeton, New Jersey.
 They were members of the Ivy League.
The 2009 Princeton Tigers football team represented Princeton University in the 2009 NCAA Division I FCS football season.
 The team was coached by Roger Hughes and played their home games at Princeton Stadium in Princeton, New Jersey.
 They were members of the Ivy League.
The 2007 Princeton Tigers football team represented Princeton University in the 2007 NCAA Division I FCS football season.
 The team was coached by Roger Hughes and played their home games at Princeton Stadium in Princeton, New Jersey.
 They were members of the Ivy League.
The 2006 Princeton Tigers football team represented Princeton University in the 2006 NCAA Division I FCS football season.
 The team was coached by Roger Hughes and played their home games at Princeton Stadium in Princeton, New Jersey.
 They were members of the Ivy League.
The 2000 Princeton Tigers football team represented Princeton University in the 2000 NCAA Division I-AA football season.
 In their first year under head coach Roger Hughes, the team compiled a 3–7 record (3–4 against Ivy League opponents) and finished in fifth place in the Ivy League.
 The team played its home games at Princeton Stadium in Princeton, New Jersey.
The 2002 Princeton Tigers football team represented Princeton University in the 2002 NCAA Division I-AA football season.
 The team was coached by Roger Hughes and played their home games at Princeton Stadium in Princeton, New Jersey.
 They were members of the Ivy League.
The 2001 Princeton Tigers football team represented Princeton University in the 2001 NCAA Division I-AA football season.
 The team was coached by Roger Hughes and played their home games at Princeton Stadium in Princeton, New Jersey.
 They were members of the Ivy League.
Princeton is a municipality with a borough form of government in Mercer County, New Jersey, United States, that was established in its current form on January 1, 2013, through the consolidation of the Borough of Princeton and Princeton Township.
 As of the 2010 United States Census, the municipality's population was 28,572, reflecting the former township's population of 16,265, along with the 12,307 in the former borough.