本文運用三次人口及住宅普查資料，檢視50歲以上人口的單身傾向及單身者的獨住傾向變化。研究發現如下：(1)50歲時未婚率從4.8%上升至12.9 %，女性增加幅度較男性高，男性教育程度越高未婚率越低，女性正好相反。(2)50歲以上女性的單身趨勢為教育的正向選擇，男性則非線性。(3)50歲以上單身者獨住的機率從0.61下降至0.44，男性較女性為高，但性別差異逐漸縮小。(4)單身傾向及單身者的獨住傾向皆為教育正向選擇，但僅女性有此傾向。(5)持續工作且健康狀態無虞的單身者，有較高的獨住傾向，但擁有住宅者較不傾向獨住。

This study uses data from the past three Population and Housing Censuses to examine trends in singlehood and solitary living among individuals aged 50 and above in Taiwan. The key findings include the following: (1) The never-married rate at age 50 increased from 4.8% to 12.9%, with a larger increase among women. Higher education lowers this rate for men but increases it for women. (2) Single older women show positive educational selection; for men, the pattern is nonlinear. (3) The likelihood of living solitarily among singles aged 50+ declined from 0.61 to 0.44, with men more likely to live solitarily but with a narrowing gender gap. (4) Education positively affects singlehood and solitary living, particularly for women. (5) Continued employment and good health increase solitary living, whereas homeownership reduces it.