OBJECTIVES: The purpose of this study was to find risk factors associated with high prevalence of hypertension. METHODS: The analysis was based on the 2007 Korean National Health and Nutrition Examination Survey (K-NHANES), a cross-sectional survey of the civilian, non-institutionalized population in Korea including an in-home interview and a clinic examination which included measurement of blood pressure. The logistic regressions were utilized to find association of various risk factors and hypertension among the Korean population. All results were weighted considering survey design of K-NHANES such as stratification and primary survey unit. RESULTS: The dataset consisted of a total of 2797 individuals, 23.26% of elderly (≥65 years old) and 57.5% of female. About 32% of people were overweight (BMI≥25kg/m²) or obese(BMI≥30kg/m²), and the prevalence in diabetes and kidney disease in the sample were 7.5% and 0.6%, respectively. According to the regression results, age, BMI, and comorbid conditions such as diabetes and kidney diseases were significantly related to hypertension in the Korean Populace. The elderly Koreans were three times as likely to be diagnosed with hypertension relative to the nonelderly population (odds ratio (OR): 2.86, p-value<0.001). Obese or overweight Koreans were two times more prone to have hypertension relative to normal weight individuals (OR: 2.44, p-value<0.001). People with diabetes had a risk factor of contracting hypertension which was four times than people without diabetes (OR: 3.53, p-value<0.001). Finally, patients with kidney disease were seventeen times more likely to be diagnosed with hypertension relative to those without kidney disease(OR: 16.87, p-value=0.012). CONCLUSIONS: The results provide evidence of the association between varying risk factors and hypertension among Koreans, and insights for both public health officials and physicians to treat or prevent hypertension patients.