Nielsen Ratings
| Season | Season premiere | Season finale | TV season | Ranking | Viewers (in millions) |
|---|---|---|---|---|---|
| 1 | January 31, 1999 | May 16, 1999 | 1999 | 33 | 12.80 |
| 2 | September 23, 1999 | August 1, 2000 | 1999–2000 | 114 | 6.32 |
| 3 | July 11, 2001 | November 9, 2003 | 2001–02 | 125 | 4.50 |
| 4 | May 1, 2005 | May 14, 2006 | 2005–06 | 68 | 7.90 |
| 5 | September 10, 2006 | May 20, 2007 | 2006–07 | 71 | 7.20 |
| 6 | September 23, 2007 | May 4, 2008 | 2007–08 | 84 | 7.94 |
| 7 | September 28, 2008 | May 17, 2009 | 2008–09 | 69 | 7.56 |
| 8 | September 27, 2009 | May 23, 2010 | 2009–10 | 53 | 7.73 |
| 9 | September 26, 2010 | May 22, 2011 | 2010–11 | 56 | 7.66 |
| 10 | September 25, 2011 | May 20, 2012 | 2011–12 | 70 | 7.30 |
| 11 | September 30, 2012 | TBA | 2012–13 | TBA | TBA |
Read more about this topic: List Of Family Guy Episodes