Well, of course not literally every station, but the stations that I'm aware of (https://en.wikipedia.org/w/index.php?title=It%27s_a_Living&oldid=979872947) thus far. I'm posting this here because there's currently an editor on Wikipedia (https://en.wikipedia.org/w/index.php?title=It%27s_a_Living&oldid=979992756), who thinks that there shouldn't be a list of stations for first-run syndicated programs:

City Station
Atlanta WATL 36 (https://www.radiodiscussions.com/showthread.php?475040-Retro-Atlanta-Wednesday-October-23-1985&p=4214735&viewfull=1#post4214735)
WSB 2 (https://www.radiodiscussions.com/showthread.php?493839-Retro-Atlanta-Sunday-January-11-1987)
Bakersfield KGET 17 (https://www.radiodiscussions.com/showthread.php?443994-Retro-Fresno-Sat-Sun-2-21-22-87-(pt-1))
Baltimore WBFF 45 (https://www.radiodiscussions.com/showthread.php?658399-Retro-Lancaster-Baltimore-DC-Sat-December-14th-1985&p=5946773&viewfull=1#post5946773)
Bangor WABI 5 (https://www.radiodiscussions.com/showthread.php?581119-Retro-Maritimes-Sat-July-25-1987&p=5187588&viewfull=1#post5187588)
Billings KYUS 8 (https://www.radiodiscussions.com/showthread.php?653266-Retro-Montana-Sun-Aug-27-1989&p=5918791&viewfull=1#post5918791)
Boston WSBK 38 (https://www.radiodiscussions.com/showthread.php?714522-Retro-Boston-MA-Sunday-April-24-1988&p=6238515&viewfull=1#post6238515)
Cedar Rapids KOCR 28 (https://www.radiodiscussions.com/showthread.php?574973-Retro-Cedar-Rapids-Dubuque-Tuesday-Jan-10-1990&p=5124020&viewfull=1#post5124020)
Chicago (https://www.youtube.com/watch?v=RsXCxVx06O4) WGN 9 (https://www.youtube.com/watch?v=kM-TONZV9iI)
WGBO 66 (https://www.radiodiscussions.com/showthread.php?441258-Retro-Chicago-independents-Friday-Feb-3-1989)
WMAQ 5
Cleveland WOIO 19 (https://www.youtube.com/watch?v=C28dPTbByrU)
Dallas KDFI 27 (https://www.radiodiscussions.com/showthread.php?592155-Retro-Dallas-Fort-Worth-Thursday-October-10-1991)
KTXA 18
Detroit (https://www.youtube.com/watch?v=C0tvnIHA_pY) WXON 20 (https://www.youtube.com/watch?v=C0tvnIHA_pY)
Eugene KLSR 34 (https://www.radiodiscussions.com/showthread.php?654067-Retro-Oregon-Wed-Sept-13-1989)
Fargo KVRR 15 (https://www.radiodiscussions.com/showthread.php?611584-RETRO-Fargo-Monday-Oct-7-1991)
Fresno KAIL 53
Grand Rapids WZZM 13 (https://worldradiohistory.com/Archive-BC/BC-1987/BC-1987-01-12.pdf)
Green Bay WGBA 26 (https://www.radiodiscussions.com/showthread.php?707934-Retro-Northern-Wisconsin-Sat-July-9th-1988&p=6190379&viewfull=1#post6190379)
Greensboro WGGT 48
Hartford WHCT 18 (https://www.radiodiscussions.com/showthread.php?583347-Retro-Western-Massachusetts-Sat-Oct-1-1988)
WTIC (https://www.youtube.com/watch?v=BKD_fdxxCkU) 61 (https://www.radiodiscussions.com/showthread.php?580263-Retro-New-York-Metro-Saturday-August-13-1988&p=5178643&viewfull=1#post5178643)
Hazleton WOLF 56 (https://www.radiodiscussions.com/showthread.php?637195-Retro-Scranton-Wilkes-Barre-Market-November-30-1985-Saturday)
Honolulu KITV 4
Houston KIAH 39 (https://www.radiodiscussions.com/showthread.php?577947-Retro-Houston-Saturday-February-28-Sunday-March-1-1987)
KTXH 20 (https://www.radiodiscussions.com/showthread.php?594084-Retro-Houston-Wednesday-September-17-1986)
Indianapolis (https://www.youtube.com/watch?v=T8RaFVqkI3I) WTTV 4 (https://www.youtube.com/watch?v=nOg7czwAsWY)
Joliet WGBO 66 (https://www.youtube.com/watch?v=AsDPS3Axnkw)
Kansas City KSHB 41 (https://www.youtube.com/watch?v=zJhzVd1bwdQ)
Las Vegas KVVU 5 (https://www.youtube.com/watch?v=EH91vpa3dek)
Los Angeles KADY 63 (https://www.youtube.com/watch?v=osn3d5gi4Hk)
KNBC 4 (https://i.ebayimg.com/images/g/4ygAAOSw6n5Xtu4v/s-l1600.jpg)
Miami (https://www.youtube.com/watch?v=Gm4TY27l9Q4) WTVJ 6 (https://www.youtube.com/watch?v=x6F_26iVIjs)
Milwaukee WITI 6
WVTV 18 (https://www.youtube.com/watch?v=oEqCrFXmcIU)
Minneapolis WFTC 29 (https://www.radiodiscussions.com/showthread.php?715097-Retro-Twin-Cities-MN-January-22-1989-(Super-Bowl-Sunday)&p=6242671&viewfull=1#post6242671)
New York WABC 7
WOR 9 (https://www.radiodiscussions.com/showthread.php?456316-NEW-YORK-TV-FALL-1988-(Part-3))
Oklahoma City KOCO 5 (https://www.radiodiscussions.com/showthread.php?714677-Retro-Oklahoma-City-Week-of-April-5-1987)
Orlando WCPX 6 (https://www.radiodiscussions.com/showthread.php?704405-Retro-Tampa-Orlando-Saturday-August-22-1992)
Philadelphia WPHL 17 (https://www.youtube.com/watch?v=Obnmsg3yx94)
Phoenix KTVK 3 (https://www.radiodiscussions.com/showthread.php?705502-Retro-Kingman-AZ-Sunday-May-3-1992)
Pittsburgh KDKA 2
WTAE 4 (https://www.youtube.com/watch?v=402ZkgNyVuk)
Portland, Maine WPXT 51 (https://www.radiodiscussions.com/showthread.php?573453-RETRO-New-Hampshire-12-24-88&p=5108519&viewfull=1#post5108519)
Salisbury (https://www.youtube.com/watch?v=O2v-CqDLbTs) WMDT 47 (https://www.youtube.com/watch?v=-e4X_Rlnyu0)
Saint Paul KSTP 5
Salinas KSBW 8 (https://www.radiodiscussions.com/showthread.php?444010-Retro-Fresno-Sat-Sun-2-21-22-87-(pt-2))
Salt Lake City KSTU 13 (https://www.radiodiscussions.com/showthread.php?623298-Retro-Seattle-Wed-Aug-21-1991-4pm-12-35am)
San Antonio KABB 29
KCWX 2
KRRT 35
San Francisco KBHK 44 (https://www.radiodiscussions.com/showthread.php?702763-Retro-San-Francisco-Sacramento-Saturday-August-30-1986)
Sacramento KMAX 31
KQCA 58
KTXL 40
Seattle KTZZ 22 (https://www.radiodiscussions.com/showthread.php?442424-Salt-Lake-City-(network-indies)-Monday-July-17-1989&p=4023265&viewfull=1#post4023265)
Secaucus WOR 9 (https://www.radiodiscussions.com/showthread.php?522611-RETRO-Fairbanks-Alaska-(February-13-1988))
St. Louis KDNL 30 (https://www.radiodiscussions.com/showthread.php?523502-Retro-St-Louis-Sat-Sun-June-28-29-1986)
St. Petersburg WTOG 44 (https://www.radiodiscussions.com/showthread.php?587981-Retro-Tampa-Cable-Evening-Late-Night-Listings-Mon-Oct-14-1985&p=5256927&viewfull=1#post5256927)
Smithtown WFTY 67 (https://www.youtube.com/watch?v=GktFEVj7vWE&t=1468s)
Toledo WUPW 36 (https://vintagetoledotv.com/wupwtv-36-ads-1/u6048vxu3jtvwgmmowhmbitomf2eq0)
Washington, D.C. WJLA 7

In San Diego, the 1985-86 season aired on KUSI-TV 51 and then it moved over to XETV-6 for the 1986-87, 1987-88, and 1988-89 seasons.

I found a few more:
Knoxville WBIR 10, at least for the 1985-86 season
Greeneville, Tenn. (Bristol-Kingsport-Johnson City area) WETO 39 (now WEMT)
Salinas KAAS 18
Wichita KSAS 24
Danville, Ky. (Lexington area) WDKY 56, until the last season, when it was on the short-lived WLKT 62 Lexington (big affiliate downgrade there, as in Chicago that season where it went from WGN to the not-so-Super 66)

In Philadelphia, it moved over to WTXF-29 for the final season, not long after WTXF picked the previous seasons up to run five days per week. There was a brief, unusual period when WPHL was running new episodes and WTXF was airing reruns.

Some print ads that I just found:
https://i.ebayimg.com/images/g/Ox0AAOSw18NeGoOb/s-l1600.jpg

https://i.ebayimg.com/images/g/mg4AAOSwFlJeD-ov/s-l1600.jpg

https://i.ebayimg.com/images/g/F8IAAOSwZGldz3Yh/s-l1600.jpg

https://i.ebayimg.com/images/g/pmkAAOSwzSlhvn1E/s-l1600.jpg

https://i.ebayimg.com/images/g/4ygAAOSw6n5Xtu4v/s-l1600.jpg

https://images.squarespace-cdn.com/content/v1/59c5099849fc2b0179b94f8b/1506378742191-IUKOHPHVRIM9VQDHB7QS/36Sat871205.jpg?format=2500w

I found a few more:
Knoxville WBIR 10, at least for the 1985-86 season
Greeneville, Tenn. (Bristol-Kingsport-Johnson City area) WETO 39 (now WEMT)
Salinas KAAS 18
Wichita KSAS 24
Danville, Ky. (Lexington area) WDKY 56, until the last season, when it was on the short-lived WLKT 62 Lexington (big affiliate downgrade there, as in Chicago that season where it went from WGN to the not-so-Super 66)

A collection of commercials (https://www.sitcomsonline.com/boards/showthread.php?t=379631) on YouTube for It's a Living in first-run syndication.