Objective: Considering the sub-optimal care of hypertension and other cardiovascular disease risk factors (CVDRF), this study aimed to describe the management and associations of hypertension and dyslipidaemia in adults with known diabetes (KD), newly diagnosed diabetes (NDD) and normoglycaemia. Design and Method: In this population-based cross-sectional study, participants with KD, and those identified as high-risk for diabetes who subsequently underwent oral glucose tolerance tests, and were classified as NDD or normoglycaemia, were included. Data collection comprised administered interviews, clinical measurements, and biochemical analyses. Multiple logistic regressions determined the associations of sociodemographic and CVDRF with hypertension and dyslipidaemia detection, treatment and control in separate models. Results: Among 618 participants (82% women), aged 49–63 years, there were 339 participants with KD, 70 with NDD and 212 with normoglycaemia. KD participants were older, but had lower rates of obesity, smoking and alcohol use than their counterparts. Prevalence of hypertension (BP > 140/90mmHg or on treatment) and dyslipidaemia (raised low-density lipoprotein cholesterol > 3mmol/l or on treatment) was highest in known diabetes (89% and 83%) compared with NDD (64% and 74%) and normoglycaemia (66% for both) (p < 0.001). Hypertension detection, treatment and control among participants with hypertension (n = 485) was higher in KD (97%, 88%, 74%) compared with NDD (89%, 69%, 44%) and normoglycaemia (80%, 60%, 46%) (all p < 0.005). Dyslipidaemia detection, treatment and control among participants with dyslipidaemia (n = 471) was higher in KD (85%, 73%, 49%) compared with NDD (37%, 23%, 10%) and normoglycaemia (36%, 22%, 14%) (all p < 0.001). Diabetes control was poor; only 20% of KD had HbA1c < 7%. In the regression models, KD compared with normoglycaemia was associated with hypertension detection (OR:6.91, 95%CI:2.25–21.22) and control (OR:2.05, 95%CI:1.04–4.02,). KD compared with normoglycaemia was associated with dyslipidaemia detection (OR:10.29, 95%CI:5.21–20.32) and treatment (OR:3.94, 95%CI:1.68–9.27). Sociodemographic (age, gender, education, income, employment) and CVDRF (smoking, alcohol use, physical inactivity, obesity) were generally not associated with hypertension or dyslipidaemia management. Conclusions: Albeit that diabetes control was poor and requires better management, hypertension and dyslipidaemia prevalence were higher and better managed in KD than their counterparts, likely because of their regular contact with healthcare services for their diabetes management. Improved screening and management of cardiometabolic diseases are required for individuals at high-risk for diabetes, who may not be in regular contact with healthcare services.