Community activist Ranju Batra was sworn in as president, Association of Indians in America, New York Chapter, at an event held at the Indian consulate.
Desis gathered in Times Square, New York, on Sunday, October 16 to celebrate Diwali.
After years of waiting, the stamp was released on Wednesday, October 5.
The Diwali stamp is being issued as a "Forever" stamp, the US Postal Service said in a statement.