manhasset population
General Manhasset Information Nassau County where Manhasset resides is 453.08 square miles. The resident population of this county is 1,334,544 and has a population rank of 26 out of all the places in the United States. Manhasset has a total of 8,362 people and of those residents there are 3,899 males and 4,463 females. The median age of the male population is 38.7 and the female population is 42.5.