Morphometric--kinetic parameters of the thyroid gland in the Kashmiri population, which is geographically, environmentally, socioculturally, anthropologically and ethnically different from that of the main country (Indian republic), have been analysed. Morphometrically, the gland in this population has been found to be significantly larger (p less than 0.001), while kinetically, the A max which is the ordinate-extrapolate of the best-fit RAIU(t) curve, has been found to be significantly lower (p less than 0.01). The majority of other structural and functional parameters were similar to those of the north Indian population.