You can get type 2 diabetes at any age. It most often develops in middle-aged and older adults. But it can develop in childhood, too. In the US, about 1.5 million adults are diagnosed with type 2 diabetes every year. Most of these people are 45 years or older. Only about 5,758 children and young adults aged 10 to 19 years are diagnosed every year, but this number is increasing every year.