The Kenya Longitudinal Socioeconomic Study of Refugees and Host Communities (K-LSRH) is the first nationally comparable survey of registered refugees and hosts in Kenya, offering a unique opportunity to inform the socioeconomic integration of refugees, including the Government of Kenya's proposed shift from camps to integrated settlements. Unlike previous surveys that lacked comparable host-refugee data, K-LSRH includes both refugee and host communities, providing comprehensive insights into their living conditions and challenges. The first wave of K-LSRH was conducted between June 2022 and 2023, covering refugees in Kakuma Refugee Camp, Dadaab Refugee Complex, Kalobeyei Integrated Settlement, as well as urban refugees in Nairobi, Mombasa, and Nakuru. The survey instrument addresses various household level, individual-level, and children's outcomes. It delves into less understood themes such as psychosocial wellbeing and trust, aiming to advance knowledge and programming in these areas.