It's a popular name in Nigeria and other parts of West Africa.
Here's some additional information:
* Origin: Yoruba (a language spoken in southwestern Nigeria)
* Pronunciation: YIN-kah
* Variations: Yinka is often used as a shortened form of names like Oluyinka (meaning "God's grace is great") and Abayomi Yinka (meaning "a father has been born, God is merciful").
It's a beautiful and meaningful name with strong cultural ties to Nigeria.