For the week of September 15-21, the final week of the annual broadcast “year”, NBC averaged 8.31 million prime-time viewers to win the average viewership title for the week (over CBS with 7.84 million).

NBC also won the demo adults 18-49 category with 3.76 million (over Fox with 3.54 million) and the demo adults 25-54 category with 4.08 million adults 25-54 (over Fox with 3.67 million).

Fox won the demo adults 18-34 category with an average of 1.67 million (over NBC with 1.56 million)

That was the final week of the broadcast year. We’ll get results for the first week of this broadcast year on Tuesday, September 30.

Nielsen TV Ratings Data: ©2008 The Nielsen Company. All Rights Reserved.