According to my research, here is the list of cities with HD LiL that do not have all of the BIG 4 active.
Missing FOX (6)
Anchorage, AK
Hartford, CT
Jackson, MS
Portland, ME
Sacramento, CA
Seattle, WA
Missing NBC (4)
Anchorage, AK
Flint, MI
Mobile, AL
San Antonio, TX
Missing ABC (3)...