In the United States, high marital instability calls for more research on union transitions after marital dissolution. Previous studies focus on remarriage and pay little attention to rising post-dissolution cohabitation. In this study, I apply marital search theory to examine the level, pace, and differentials of repartnering (remarriage or cohabitation vs. staying single) and the exit from cohabitation (remarriage or dissolution vs. staying cohabiting). Adopting union history data from the pooled National Survey of Family Growth (2011–2017), I track union transitions among a sample of N = 2129 women. Analyses based on life tables and discrete-time event history analyses reveal important findings. First, most women repartner after marital dissolution. Compared to remarriage, cohabitation occurs more frequently and shows a quicker pace. Second, post-dissolution cohabitation is short-lived, and its transition to remarriage is more common than to dissolution. Third, these union transitions differ by demographic and socioeconomic predictors, including age, race and ethnicity, and education. Overall, I reveal that post-dissolution union transition is a divergent and unequal process, and I further discuss the implications on theory and family inequality.

在美国，婚姻的高度不稳定要求对婚姻解除后的工会过渡进行更多研究。之前的研究主要集中在再婚，而很少关注解体后同居现象的增加。在这项研究中，我应用婚姻搜索理论来研究重新伴侣（再婚或同居与保持单身）和退出同居（再婚或解除同居与保持同居）的水平、速度和差异。我采用全国家庭成长调查（2011-2017 年）汇总的工会历史数据，跟踪了N = 2129 名女性样本中的工会转变。基于生命表和离散时间事件历史分析的分析揭示了重要的发现。首先，大多数女性在婚姻解除后会重新结婚。与再婚相比，同居发生的频率更高，速度也更快。其次，分居后同居的寿命很短，其过渡到再婚的情况比解除同居更为常见。第三，这些工会转型因人口和社会经济预测因素而异，包括年龄、种族和民族以及教育程度。总的来说，我揭示了解散后的工会转型是一个发散且不平等的过程，并进一步讨论了其对理论和家庭不平等的影响。