CW TV Show Ratings for 2010-11 Season [as of 5/5/11]

There were huge gains this time around for Smallville, Supernatural, and Nikita. The thing to keep in mind is that, because the audience is typically so small for The CW shows, it doesn’t take much to give the series huge percentage gains. Still, the percentages are impressive. America’s Next Top Model was the only show on the network to have a significant decline.

Which CW TV shows will be cancelled or renewed depends mostly on the series’ ratings. The network puts a lot of importance on the female 18-34 demographic where most others focus on the 18-49 demo. Before we get to the season-to-date averages, here are the winners and losers from April 29th through May 5th — based on the 18-34 female demo, as measured against the last original episode.

Week-to-Week Gains: Smallville 0.8/3 (+60.0%), Supernatural 1.1/4 (+83.3%), and Nikita 0.9/3 (+28.6%).

No Change: Hellcats 0.7/2.

Week-to-Week Losses: 90210 1.2/4 (-7.7%), Gossip Girl 1.5/4 (-11.8%), One Tree Hill 1.1/3 (-15.4%), America’s Next Top Model 1.4/4 (-22.2%) and The Vampire Diaries 1.8/6 (-5.3%).

Wonder if your favorite CW show’s been renewed or cancelled? Check out our comprehensive list. We’ll keep updating it as new info becomes available.

Below is a list of the regular CW TV shows and their 2010-11 season average ratings to date. It only incorporates the ratings for original episodes and not repeats. The data is sorted by the 18-34 female demographic averages. The closer a show is to the bottom, the more likely it is to be cancelled. Friday is one of the least-watched nights of TV so those shows are expected to get lower numbers.

W 18-34 demo rank	TV Shows	Average viewership (in millions)	Average 18-49 demo rating	Average women 18-34 demo	Compared to last week
1	The Vampire Diaries renewed)	3.17	1.4	2.2	down
2	Gossip Girl renewed)	1.68	0.9	2.0	---
3	One Tree Hill	1.81	0.9	1.7	---
4	90210 renewed)	1.78	0.9	1.6	---
5	Hellcats	1.88	0.8	1.3	down
6	Life Unexpected (cancelled)	1.52	0.7	1.3	---
7	Nikita	2.39	0.9	1.1	---
7	Supernatural renewed)	2.27	1.0	1.1	---
9	Smallville (ending)	2.54	1.1	0.8	down
1	ANTM (fall, renewed)	2.87	1.3	2.1	---
2	ANTM (spring, renewed)	2.07	1.0	1.6	---
3	Shedding for the Wedding	0.98	0.4	0.7	---

Raw data: © The Nielsen Company via Media Week.

What do you think? Any surprises? Which shows do you think won’t survive to see a new season?