Data from the 2017 National Diabetes Statistics Report

Total prevalence of diabetes

Total:  30.3 million children and adults in the United States – 9.4% of the population – have diabetes.

Diagnosed:  23.1 million people

Undiagnosed:  7.2 million people

Prediabetes:  84.1 million people – 33.9% of adults 18 and older, 48.3% of adults 65 or older have prediabetes.

Men

15.3 million, or 12.7% of all men aged 18 years or older have diabetes.

Women

14.9 million, or 11.7% of all women aged 18 years or older have diabetes.

Race and ethnic difference in the prevalence of diagnosed diabetes

7.4% of non-Hispanic whites
8% of Asian Americans
12.7% of non-Hispanic blacks
12.1% Hispanics
15.1% American Indians/Alaskan Natives

Among Hispanics rates were:

9% for Cubans
13.8% for Mexican Americans
12% for Puerto Ricans

Sources:
National Diabetes Statistics Report, 2017