For the just-completed 2007-2008 season, CBS remains the oldest skewing broadcast TV network with a median age of 54. ABC averaged 50, followed by NBC (49), Fox (44), CW (34) and Univision (34). When live-plus-7 DVR viewing is factored in, the networks (except CW and Univision) drop by a year -- which still reps the oldest median age ever for the nets.

"With traditional television no longer necessarily the first screen for the younger set, the ages of the broadcast networks keep rising," says Magna researcher Steve Sternberg.

Sternberg notes that the median age for U.S. households is 38.




The youngest-skewing programs on each network were:

ABC: "Supernanny" (median age of 41)
CBS: "How I Met Your Mother," "Kid Nation" and the Tuesday edition of "Big Brother" (tied at 45)
CW: "One Tree Hill" (26)
FOX: "American Dad," and "Family Guy" (29)
NBC: "Scrubs"

The oldest-skewing programs on each network were:

ABC: "Women's Murder Club" (57)
CBS: "60 Minutes" (60)
CW: "Life Is Wild" (45) FOX: "Canterbury's Law" (55) NBC: "Monk" (58)

As far as the late-night talk shows are concerned, their audiences are aging as well. "The Tonight Show With Jay Leno" has a median age of 54 and "The Late Show With David Letterman" is a year younger at 53. "Nightline's" audience averages 52, "Jimmy Kimmel Live" has a median age of 50 and "Late Night With Conan O'Brien" audience averages age 46.