Found this interesting piece of information, courtesy of RJK from SpottedRatings:
Found this ranker among the major networks (ABC, CBS, NBC and Fox) and thought it might be interesting, especially when it comes to perhaps helping with mock schedules… The percentage of adults 18-49 viewing that is also done in the presence of a child (2-17).
TOP 10 COMEDIES
The Middle (ABC) ………………… 16.8%
The Goldbergs (ABC) …………… 16.7%
Speechless (ABC) ……………….. 15.6%
Fresh Off the Boat (ABC) ………. 15.5%
American Housewife (ABC) …… 15.4%
The Simpsons (Fox) ……………… 14.8%
Imaginary Mary (ABC) …………… 13.7%
Real O’Neals (ABC) ………………. 13.2%
Last Man Standing (ABC) ………. 12.8%
Black-ish (ABC) ……………………. 12.7%(MODERN FAMILY is next at 12.4%… this used to be a lot higher, but I think the audience has aged and they haven’t added new child viewers along the way.)
TOP 10 DRAMAS
Once Upon a Time (ABC) ……… 15.8%
MacGyver (CBS) ………………….. 12.3%
Chicago Fire (NBC) ………………. 11.1%
Lethal Weapon (Fox) …………….. 10.9%
Gotham (Fox) ………………………. 10.8%
Star (Fox) ……………………………. 10.6%
Prison Break (Fox) ……………….. 10.6%
Ransom (CBS) …………………….. 10.6%
Time After Time (ABC) ………….. 10.5%
Empire (FOX) ………………………. 10.5%(through April 23; minimum three episodes)
This could be why ABC could be considering a renewal, and why they’ve continued to keep OUAT at 8pm, despite lower 18-49 ratings. The 18-49 ratings alone might not necessarily be all that matters to them, if they’re targeting a family audience for this show.