INDIA: PLACE-NAMES
Many place-names in India have recently been changed. National Geographic maps and atlases use the new names, with the old names in parentheses (optional, for reference only) for a reasonable time after the changes.
Bengaluru (Bangalore)
Prayagraj (Allahabad)
The following are established and no longer need to include the old names: Mumbai, Chennai, or Kolkata.
Federal, State, and local preferences for names and spellings can differ, and some new names are not popular in the press. NG will prioritize official federal spellings.