He was among 26 people from across the UK presented with a medal at the House of Lords.
Mr Chowdhury has raised money for a number of charities, including completing a 100-mile walking challenge in a month in support of cancer causes and women's refuges.
He organises One Community UK and the British Education Awards and has served as an ambassador and board member at Oldham Academy North.
He is also involved with The King's Trust, which works with young people facing disadvantage.
Mr Chowdhury founded Probash Bangla, an English-Bengali publication intended to provide a platform for the Bengali community and connect different generations.
His British Citizen Award medal was presented by One Show presenter Matt Allwright.
Paul Thompson, finance director from BCA partner One Stop, said: “I am delighted to present this Medal of Honour to Amin in recognition of his outstanding dedication of supporting vulnerable people, both locally and internationally.
“Amin has made a real difference to so many lives, whilst championing inclusion and education. Many congratulations.”
Mr Chowdhury said he wanted to dedicate the recognition to Oldham.
He said: “I know it can be a bit of a cliché to say that an award is not about you but instead about others, but that is genuinely the way I view it. Oldham is a community where everybody matters and I had to help that ethos by giving back.”
His community activities have also included organising cricket competitions and Ramadan Appeal presentation ceremonies.
Mr Chowdhury added: “I enjoy meeting people and hearing their stories and during the last Holy Month was astonished at the lengths to which people would go to aid those less fortunate.
“Compassion is part of the DNA in Oldham and I was just delighted to highlight my beloved borough during the BCAs.”
Recipients also took part in an open-top bus tour of Westminster following the presentation.
