This .csv file contains a unique sample conducted among ex-pastoralists in Marsabit Town, northern Kenya. In the survey, we wanted to analyse the effects of migration into town on levels of well-being. We analyse these effects by contrasting two distinct groups of former pastoralists, one group that engaged in migration upon leaving pastoralism, the ‘migrant group’, and one group that was already settled in Marsabit Town before they ceased their pastoral activities, the ‘settled group’. Our data collection was conducted in 2017 and involved administering surveys with 285 households that were formerly involved in pastoralism. Of these, 93 households were identified as migrant and 192 households were identified as settled. The 80-question survey covered a broad spectrum of topics related to livelihoods, migration, and well-being, including details about new occupations, the timing of livelihood change, previous household residences, birthplace of the household head, household composition, household assets, dwelling characteristics, and a range of well-being indicators.