Smallville Nielsen Rankings

The following is a table for the seasonal rankings, based on average total estimated viewers per episode, of Smallville on The WB and The CW. "Rank" refers to how Smallville rated compared to the other television series which aired during primetime hours.

Season	Timeslot (ET/PT)	Network	Premiered		Ended		Rank	Viewers (in millions)
			Date	Premiere Viewers (in millions)	Date	Finale Viewers (in millions)
Season 1	Tuesday 9/8C	The WB	October 16, 2001	8.40	May 21, 2002	3.80	#115	5.90
Season 2			September 24, 2002	8.70	May 20, 2003	N/A	#113	6.30
Season 3	Wednesday 8/7C		October 1, 2003	N/A	May 19, 2004	5.92	#141	4.96
Season 4			September 22, 2004	6.07	May 18, 2005	5.47	#124	4.40
Season 5	Thursday 8/7C		September 29, 2005	5.90	May 11, 2006	4.85	#117	4.70
Season 6		The CW	September 28, 2006	4.96	May 17, 2007	4.14	#125	4.10
Season 7			September 27, 2007	5.18	May 15, 2008	3.85	#175	3.77
Season 8			September 18, 2008	4.34	May 14, 2009	3.13	#152	3.74
Season 9	Friday 8/7C		September 25, 2009	2.58	May 14, 2010	2.40	#129	2.38
Season 10			September 24, 2010	2.98	TBA	N/A	N/A	N/A