The pair have helped people with type 2 diabetes in the Yanchep and Two Rocks area by providing information, social support and friendship for several years.
"Diabetes affects many people in our community," Mrs Sims said.
�Being part of a support group can positively affect how they react to the diagnosis and how they feel about their diabetes.
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READ NOW"A type 2 diabetes diagnosis is life-changing " we want them to know that they are not alone; that we do care.�
Diabetes WA chief executive Andrew Wagstaff said diabetes was the fastest-growing chronic condition in Australia.
According to him, the rates in Yanchep and Two Rocks are above the national average.
"Len and June's dedication to support and participate in their local community is significant," he said.
"We commend them for leading the way in showing the community they support that a few simple steps can go a long way in minimising the impact of diabetes."
The award was one of eight honours presented during the Diabetes WA Excellence Awards last month.