https://timesofindia.indiatimes.com/city/dehradun/in-3-month... has a bit more info.
You can find the census for Uttarkashi district at https://cdn.s3waas.gov.in/s3ef575e8837d065a1683c022d2077d342...
Page 12 says there are 694 villages and 330,086 people in the district.