High salt intake has been associated with adverse side-effects such as hypertension and cardiovascular disease. The amount of salt intake among the population of Saudi Arabia is not known. The objective of this study was to estimate the salt intake among residents of the Eastern region of Saudi Arabia by measuring 24-hour urinary sodium excretion. Urine samples were collected from 130 individuals aged over 14 years for measurement of levels of sodium and other electrolytes. A total of 87 samples met the criteria for accuracy and were analysed. Total mean 24-hour sodium excretion for the group was 140 (SD 49) mEq [153 (SD 52) mEq for males and 118 (SD 37) mEq for females]. These values exceed the recommended daily intake of sodium and may contribute to the risk of developing hypertension and cardiovascular disease in Saudi Arabia.