Background: High prevalence of hypertension (HTN) and its subsequent serious complications make this disease as a major health-treatment concern in many societies. The current study aimed to investigate known factors as risk factors for hypertension and the way of their association in study population of Fasa cohort in south of Iran at 2019.Methods: This is an analytical-cross sectional study. Study population was the individuals covered by Fasa cohort. Information of the first phase of Fasa Persian cohort in south of Iran was used in the study. Independent t-test, chi-square test, analysis of variances, Pearson correlation coefficient, and logistic regression were used to analyze data. Data was analyzed using SPSS software version 22, and P-value<0.05 was considered statistically significant.Results: Out of the population of 10111 individuals of the study, 5546(54.86%) subjects were female and 4565(45.16%) were male. The overall prevalence of hypertension was 41.8 %. In the present study (28/5%) were with HTN stage 1, and (13/3%), were with HTN stage 2. In addition, a significant association was observed among HTN and cardiovascular diseases, diabetes and renal failure (p<0.5).Conclusions: prevalence of HTN in study population is considerable. Given its hazardous complications, application of appropriate methods in order to screen, prevent and treat HTN is necessary. In addition, using training programs, changing lifestyle, and promoting self-care behaviors can be effective in prevention, control, and decrease in hazardous complications caused by HTN.