Mental health remains a neglected issue in Kenya, with limited data, uneven service distribution, and widespread stigma. This study in Meru County assessed the knowledge, attitudes, and practices of 535 community members and 109 healthcare workers (HCWs) using surveys, interviews, and discussions. Findings showed that 39% of community members had a relative with a mental illness, and 68% of HCWs had been diagnosed themselves. Mental illness was often linked to supernatural causes, genetics, substance abuse, and socio-economic pressures. Only 29.4% of HCWs reported available counseling services, and while HCWs noted free medication, community members faced shortages. Traditional healers and religious leaders played a significant role in mental health care. The study highlights the need for improved HCW training, public awareness, and stronger health systems to address mental health challenges in Kenya.