, the gender distribution of the population was 50.0% male and 50.0% female. The age distribution, , in Pigniu is; 7 children or 15.6% of the population are between 0 and 9 years old and 9 teenagers or 20.0% are between 10 and 19. Of the adult population, 4 people or 8.9% of the population are between 20 and 29 years old. 6 people or 13.3% are between 30 and 39, 9 people or 20.0% are between 40 and 49, and 2 people or 4.4% are between 50 and 59. The senior population distribution is 1person is between 60 and 69 years old, 5 people or 11.1% are between 70 and 79, there is 1 person who is between 80 and 89, and there is 1 person who is between 90 and 99.