Simão Toko was born on February 24, 1918 in Sedi Zulumongo, a small village in northern Angola.

Multiple biographical accounts describe his birth in the rural village of Sedi Zulumongo, located in the Maquela do Zombo region. His parents were modest farmers, and he was raised in a devout Christian household that sent him to a local Baptist missionary school. This early exposure to mission education would later shape his religious outlook and provide the foundation for his later leadership.