He graduated from Fordham University in 1983 and from Fordham University School of Law in 1986.
Vallone served as Chair of the Council"s Public Safety Committee. Before being elected to the City Council, Vallone worked as an Assistant to the Manhattan District Attorney for six years. His notable legislation includes several anti-graffiti bills
He has been honored by the Council of Senior Centers and Services of New York City, the Immaculate Conception Youth Program (ICYP), the League of Humane Voters, and other organizations.
In February 2014, Peter Vallone Junior. was named one of America’s Top Ten Animal Defenders by the Animal Legal Defense Fund based on his long career of helping animals.
Vallone opposed proliferation of power plants and represented C.H.O.K.E.(Coalition Helping Organize a Kleaner Environment) and Astoria residents in court, winning a victory against the New York Power Authority leading to the closing of the Charles Poletti Power Plant in 2010. Vallone also opposes water fluoridation in New New York
In April 2009 Vallone supported a proposed ban on pit bulls, Dobermans, Rottweilers, and other dogs weighing more than 25 lbs. in New York City public housing. In 2013, Vallone ran for Queens borough president, and lost to Melinda Katz in the primary held on September 10, 2013.
He received 37,132 votes, or 33.7%, falling short of Katz"s 48,975 votes, or 44.5%, and came second in a four-way race.
Having been term-limited out of office, Vallone was succeeded in city council by Costa Constantinides on January 1, 2014.