According to the Pol-MONICA program the random selected population samples were studied in inhabitants of Warsaw or the Tarnobrzeg province . After excluding from analysis the subjects treated with the hypotensive++ or hypolipemic drugs the differences between populations studies with regard to range of mean pressure value, except systolic pressure (RRs) in women, appeared significant ones. In populations studied the arterial blood pressure (CTK) was influenced by: age, sex, education, family history with regard to the circulatory system, the alcohol intake, smoking, heart action frequency the Quetelet coefficient value, triglyceride concentration and daily sodium intake. After analysis of inter-population differences in values of above factors the mean RRs values in populations studied did not differed significantly whereas differences in mean values of diastolic pressure (RRr) were highly statistically significant.