Clutha District Settlement Support won the Supreme Award at the Clutha District Community Awards last week.
Group chairwoman Dianne Lowry said the win was a surprise.
''They're quite flabbergasted ... The whole group is just overwhelmed.''
Ms Lowry said the group members worked quietly behind the scenes.
''They don't need bells and whistles. They're a very humble group.''
Ms Lowry said it was good to finally have the group recognised.
''I don't think they realise how much they do.''
The group was aimed at helping new migrants to the district integrate and settle into the community.
It helped give new members a ''sense of belonging'', Ms Lowry said.
The group also educated the host community through its work.
Some of the work organised by the group including driving lessons and English classes, as well as several events throughout the year.
It was a wide rural district and many migrants did not have the opportunity to integrate easily, as they worked on farms or in factories.
''These events bring everybody together.''
In a statement, Trustpower community relations representative Alice Boyd said the group stood out for its creativity, impact and input of its volunteers.
The group dedicated its time to helping newcomers to the community settle in.
Clutha District Settlement Support received a framed certificate, a trophy and $1500 in prizemoney.
It will go on to represent the Clutha District at the 2017 Trustpower National Community Awards in Queenstown next year.
