Allon, a native New Yorker, grew up on the Upper West Side of Manhattan. Allon attended Stuyvesant High School, Cornell University and received a Master's Degree from the Columbia University Graduate School of Journalism. At Cornell, he worked for The Cornell Daily Sun and was a member of the Quill and Dagger society.
From 1986 to 1991, Allon was editor of The West Side Spirit, a community newspaper now owned by Manhattan Media, the company of which Allon currently serves as CEO. Along with The West Side Spirit, Manhattan Media also publishes the community newspapers Our Town, The Westsider, the Chelsea Clinton News, the political newspapers City Hall and The Capitol, and the magazines Avenue and New York Family. 
Allon helped create two successful public high schools, Eleanor Roosevelt High School on the Upper East Side and Frank McCourt High School on the Upper West Side of Manhattan. He also served on the advisory board of the West Side Crime Prevention Program and was the President of the New York Press Association in 2008.
On July 12, 2011, Allon announced that he would run for Mayor of the City of New York. He believes New Yorkers need a leader "like me who thinks like an Israeli: tough and always ready to defend his people".
- CHEN, David (2012-10-16). "Mayoral Hopeful Switches to G.O.P.". The New York Times. Retrieved 2011-11-06.
- Decker, Geoff (2011-07-14). "Meet Tom Allon, who wants to be your next education mayor". GothamSchools. Retrieved 2011-10-26.
- "From the Spectator To Professional Journalism: The Life of Tom Allon". The Spectator. 2011-05-05. Retrieved 2011-10-26.
- "Tom Allon Enters 2013 New York City Mayoral Race". Huffingtonpost.com. Retrieved 2011-11-04.
- David Horovitz (12 April 2012). "The Hebrew-named outsider bidding to become New York's fifth Jewish mayor". The Times of Israel. Retrieved 14 April 2012.
- Wall Street Journal January 9th, 2012: Long-Shot Bid Boosted by Liberals by Michael Howard Saul