Prevalence of Both Diagnosed and Undiagnosed Diabetes
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Among the US population overall, crude estimates for 2019 were:
- 37.3 million people of all ages—or 11.3% of the US population—had diabetes.
- 37.1 million adults aged 18 years or older—or 14.7% of all US adults—had diabetes (Table 1a; Table 1b).
- 8.5 million adults aged 18 years or older who met laboratory criteria for diabetes were not aware of or did not report having diabetes (undiagnosed diabetes, Table 1b). This number represents 3.4% of all US adults (Table 1a) and 23.0% of all US adults with diabetes.
- The percentage of adults with diabetes increased with age, reaching 29.2% among those aged 65 years or older (Table 1a).
| Characteristic | Diagnosed diabetes Percentage (95% CI) | Undiagnosed diabetes Percentage (95% CI) | Total diabetes Percentage (95% CI) |
|---|---|---|---|
| Total | 11.3 (10.3–12.5) | 3.4 (2.7–4.2) | 14.7 (13.2–16.4) |
| Age in years | |||
| 18–44 | 3.0 (2.4–3.7) | 1.9 (1.3–2.7) | 4.8 (4.0–5.9) |
| 45–64 | 14.5 (12.2–17.0) | 4.5 (3.3–6.0) | 18.9 (16.1–22.1) |
| ≥65 | 24.4 (22.1–27.0) | 4.7 (3.0–7.4) | 29.2 (26.4–32.1) |
| Sex | |||
| Men | 12.6 (11.1–14.3) | 2.8 (2.0–3.9) | 15.4 (13.5–17.5) |
| Women | 10.2 (8.8–11.7) | 3.9 (2.7–5.5) | 14.1 (11.8–16.7) |
| Race-Ethnicity | |||
| White, non-Hispanic | 11.0 (9.4–12.8) | 2.7 (1.7–4.2) | 13.6 (11.4–16.2) |
| Black, non-Hispanic | 12.7 (10.7–15.0) | 4.7 (3.3–6.5) | 17.4 (15.2–19.8) |
| Asian, non-Hispanic | 11.3 (9.7–13.1) | 5.4 (3.5–8.3) | 16.7 (14.0–19.8) |
| Hispanic | 11.1 (9.5–13.0) | 4.4 (3.3–5.8) | 15.5 (13.8–17.3) |
| Characteristic | Diagnosed diabetes Number in Millions (95% CI) | Undiagnosed diabetes Number in Millions (95% CI) | Total diabetes Number in Millions (95% CI) |
|---|---|---|---|
| Total | 28.5 (25.9–31.2) | 8.5 (6.8–10.2) | 37.1 (33.2–40.9) |
| Age in years | |||
| 18–44 | 3.5 (2.8–4.2) | 2.1 (1.4–2.9) | 5.6 (4.6–6.7) |
| 45–64 | 11.8 (9.9–13.6) | 3.8 (2.7–4.8) | 15.5 (13.1–17.9) |
| ≥65 | 13.3 (12.0–14.5) | 2.6 (1.5–3.7) | 15.9 (14.5–17.4) |
| Sex | |||
| Men | 15.4 (13.5–17.3) | 3.6 (2.5–4.7) | 19.1 (16.7–21.4) |
| Women | 13.1 (11.3–14.9) | 4.9 (3.2–6.6) | 18.0 (15.0–21.0) |
| Race-Ethnicity | |||
| White, non-Hispanic | 17.8 (15.2–20.4) | 4.3 (2.5–6.2) | 22.2 (18.5–25.8) |
| Black, non-Hispanic | 3.9 (3.3–4.6) | 1.5 (1.0–1.9) | 5.4 (4.7–6.1) |
| Asian, non-Hispanic | 1.8 (1.5–2.1) | 0.9 (0.5–1.2) | 2.7 (2.2–3.1) |
| Hispanic | 4.7 (4.0–5.3) | 1.8 (1.3–2.3) | 6.5 (5.8–7.2) |
Trends in Prevalence of Diagnosed Diabetes, Undiagnosed Diabetes, and Total Diabetes
- During 2001–2020, the age-adjusted prevalence of total diabetes significantly increased among adults aged 18 years or older (Figure 1).
- Prevalence estimates for total diabetes were 10.3% in 2001–2004 and 13.2% in 2017–2020 (Appendix Table 2).
- During this period, the age-adjusted prevalence significantly increased for diagnosed diabetes. No significant change in undiagnosed diabetes prevalence was detected (Figure 1; Appendix Table 2).
Figure 1. Trends in age-adjusted prevalence of diagnosed diabetes, undiagnosed diabetes, and total diabetes among adults aged 18 years or older, United States, 2001–2020.
Notes: Diagnosed diabetes was based on self-report. Undiagnosed diabetes was based on fasting plasma glucose and A1C levels among people self-reporting no diabetes. Time period 2017–2020 covers January 2017 through March 2020 only.
Data source: 2001–March 2020 National Health and Nutrition Examination Surveys.
Report Pages
- National Diabetes Statistics Report
- ›Prevalence of Both Diagnosed and Undiagnosed Diabetes
- Prevalence of Diagnosed Diabetes
- Incidence of Newly Diagnosed Diabetes
- Prevalence of Prediabetes Among Adults
- Risk Factors for Diabetes-Related Complications
- Preventing Diabetes-Related Complications
- Coexisting Conditions and Complications
- Appendix