Even later! My grandparents still had a black and white "portable" in the kitchen in the early 90s. My friend (who was wealthy) still had a black a white portable that my friend's sister would watch soap operas on in the mid-90s.
We had a B&W portable that lived on top of the refrigerator but was dragged into the dining room to watch Wheel of Fortune and Jeopardy for weeknight dinners. The TV itself was from the 70s, but we were still using it in the early and mid 90s. It still had paint dried on its case from when my parents watched it while painting the rooms of the house.