After all the suggestions and reminders of stations I missed, I came up with a new list. First is the 12 All-News stations still doing the format to this day. I also have a revised list of former All-News stations. And a list of NIS stations that continued doing the format on their own a few years more.
---Current All-News Stations---
WINS New York ... 1965
KYW Philadelphia ... 1965
WCBS New York ... 1967
KNX Los Angeles ... 1968
WBBM Chicago ... 1968
KCBS San Francisco ... 1968
WTOP Washington (originally 1500 AM, later 103.5 FM) ... 1969
WWJ Detroit ... 1971
KRLD Dallas ... 1978 (in June 2024, switched to AM and PM drive time only)
WBZ Boston ... 1991 (talk shows in evenings)
KSL Salt Lake City ... 1995? (AM and PM drive time only)
KNWN Seattle ... 2002 (with some longer-form news shows on weekends)
---Past All-News Stations---
KFAX San Francisco ... 1960 (ended in 1961)
XETRA Tijuana-Los Angeles ... 1961 (ended in 1968 when KFWB debuted)
KFWB Los Angeles ... 1968 (ended in 2009)
WEEI Boston (on 590 AM) ... 1974 (ended in 1990)
KIRO Seattle ... 1974 (ended in the 1990s, except for AM drive)
KEYH Houston ... 1974 (ended 1978)
WINZ Miami ... 1975 (ended in the 1980s)
WAVA-AM-FM Washington ... 1970s
WCAU Philadelphia ... 1977 (ended in 1980)
KTRH Houston ... 1984 (ended in 1997)
WMAQ Chicago ... 1988 (ended in 1998)
KLIV San Jose ... 1991 (ended in 2016)
KPIX-AM-FM San Francisco ... 1994 (ended in 1995)
KROI Houston ... 2011 (ended in 2014)
WEMP New York ... 2011 (ended in 2012)
WWWN Chicago ... 2011 (ended in 2012)
KGO San Francisco ... 2011 (ended in 2014 - it had previously done AM and PM drive news plus an hour at noon during talk format)
WNEW-FM Washington ... 2012 (ended in 2014)
WYAY Atlanta ... 2012 (switched to mostly talk by 2014)
---NBC's NIS Network---
Beginning in 1975, a few dozen stations aired an all-news format using NBC's News and Information Service (NIS). They included four NBC-owned stations:
97.1 WNWS-FM New York (now WQHT)
101.1 WNIS-FM Chicago (now WKQX)
99.7 KNAI-FM San Francisco (now KMVQ)
980 WRC Washington (now WTEM)
WRC stayed as All-News for a couple of years after the NIS network shut down in 1977. But the other NBC-owned stations, WNWS, WNIS and KNAI, switched to new formats.
A handful of affiliates had been successful with NIS and continued the All-News format on their own. KQV Pittsburgh lasted the longest, 1975 until 2017. But there were also WRR Dallas, WPOP Hartford, WBRE-AM-FM Wilkes-Barre, KYXI Portland OR and WCSH Portland ME, carrying on with an all-news format using local anchors for a few years, even after the demise of NIS.