How common is type 2 diabetes in the US?

It is estimated that 34.2 million adult Americans (6.7 out of every 1000 people) have diabetes of which 90% to 95% of diagnosed cases are type 2 diabetes mellitus (T2DM).¹ Out of that 34 million, it is estimated that about 7.3 million adults are undiagnosed. About 1.4 million out of the 34 million have type 1 diabetes. About 1.5 million adults are newly diagnosed with diabetes every year with the majority being 45 years or older.

^References

1.  Centers for Disease Control and Prevention. National Diabetes Statistics Report. Atlanta, GA: Centers for Disease Control and Prevention, U.S. Dept of Health and Human Services; 2020.