According to a report by the Internet and Mobile Association of India (IAMAI) and IMRB International, the number of Internet users in India is expected to grow 32 percent to 302 million this year from 213 million at the end of December last year.
The Internet user base in the country is further estimated to grow to 354 million by June 2015.
Currently, India has the third-largest Internet user base in the world but with the estimated growth, the country will overtake the US as the second-largest Internet user base in the world by December-end.
At present, China leads with more than 600 million Internet users, while the US has an estimated 279 million users.
"The Internet in India took more than a decade to move from 10 million to 100 million and 3 years from 100 million to 200 million.
"However, it took only a year to move from 200 to 300 million users. Clearly, Internet is mainstream in India today," IAMAI-IMRB said in a statement.
Of the 278 million users, 177 million are in urban India, higher by 29 percent from last year. This is expected to reach 190 million by December 2014 and 216 million by June 2015.
In rural India, the number of Internet users increased by 39 percent to reach 101 million in October 2014. It is expected to reach 112 million by December 2014 and 138 million by June 2015.
The Internet user base in the country stood at 257 million in June this year and further expanded to 278 million by the end of October.
Of the 278 million, the number of mobile Internet users stood at 159 million and is estimated to reach 173 million by the end of December.
There are 119 million users accessing the Internet on mobile devices in urban India, while rural mobile Internet user base stood at 40 million in October this year.
This is further estimated to touch 128 million (urban) and 45 million (rural) by December-end.
The report said there is a huge spurt in the number of people accessing Internet on a daily basis in urban India.
As on June 2014, 31.5 million (61 percent) in 35 cities were using Internet on a daily basis as compared to 51 percent in June last year. Also, 96 percent of Internet users go online at least once a week. Of these, 18 percent access Internet 4-6 times a week, while 14 percent do it 2-3 times a week.
Nearly 93 percent of the respondents in urban India used Internet primarily for search, followed by online communication and social networking.
However, in rural India, entertainment (87 percent) is the primary reason for Internet usage, followed by communication and social networking.