Evidence from Bhagavat, Mahabharata & Bhavishya Malika
Lord Maha-Vishnu's tenth incarnation, the Kalki Avatar, is said to be born in a village called Sambal. This information is mentioned in various Hindu scriptures including the Shreemad Bhagavat, Shreemad Mahabharata, Kalki Purana, and Bhavishya Malika. The evidence points conclusively to one location: Sambhut Sambal in Odisha, near the temple of Goddess Maa Biraja in the Jajpur district.
Lord Kalki will be born in the home of a prominent Brahmin in Sambal village — a staunch devotee of Lord Maha-Vishnu, known to sing His glories daily.
Lord Kalki will be born in the home of a prominent Brahmin residing in Sambhut Sambal — a village newly established in the past by King Shree Jajati Keshari for performing Yagna in the region of Goddess Maa Biraja. The Sanskrit word "Sambhuta" means "newly created."
According to the history of Odisha, King Shree Jajati Keshari from the Soma Vanshi dynasty, to perform ten Ashwamedha Yagnas, brought 10,000 Brahmins from Kannauj in Uttar Pradesh and settled them in a region to the east of Goddess Maa Biraja's temple in the Jajpur district of Odisha. This newly established village was called Sambal — the "Sambhut Sambal" referenced in the scriptures.
Mahapurush Achyutananda states that Sambal village (Sambhut Sambal) is the place of Brahmin settlement established in the eastern part of Goddess Maa Biraja Devi's temple in the Jajpur district of Odisha. This pilgrimage place is also known as "Nabhi Gaya" or "Hari-Har Kshetra."
Therefore, it can be concluded that Lord Kalki will be born in the Sambhut Sambal village of the Goddess Maa Biraja Kshetra in the state of Odisha, India.