Here is where all Prime Minister Narendra Modi travelled within the country since his swearing in May 2014. Mumbai is the city he visited most and Maharastra is the state he visited most. As of Feb 24th 2015, The Prime Minister travelled to 17 states. He made 50 trips, of which 30 are official and 20 non official. For more details, please refer to the following link.
(Here is a list of Prime Minister Narendra Modi’s foreign visits from the time he took charge as the Prime Minister of India.)