No not really. In some cases the village might indicate one's caste. In most cases, it does not. If two Indians are from the same region, they know the demogr

No not really. In some cases the village might indicate one's caste. In most cases, it does not. If two Indians are from the same region, they know the demographic of that region pretty well. So, that might be revelatory. But this is only true for some regions in India where villages are segregated. Most villages in India are not segregated, i.e. Brahmins, upper-caste (they call themselves that), general castes, Dalits live together. But the neighborhoods are often segregated. But they do go to the same schools. But as you are not an Indian, whether the one being asked is a Brahmin or a Dalit, will not tell you his village name- simply because you will not know it. And in megacities, people from every caste are there. As someone from outside India, you can safely ask where someone is from. They will probably tell you- "Mumbai" or "a small village near Delhi". No risk there. Never ever ask people their caste.