This might have been asked before but I couldn't get a similar question. I am working on an application which will have addresses in India populated using dropdowns till 4 levels.

State => District => Tahsil/Municpality(based on rural/urban) => Village/Ward.

Where can I get this data with full hierarchy? I checked few places but couldn't get all the data as a single file or in a few files. I got a list of villages from here but this will give out 35 files for 35 states and it doesn't have Urban wards.