The total population of Smithfield is estimated to be 96 with 51 males (53.13%) and 45 females (46.88%). There are 6 less females than males in Smithfield.
In 2022, the population of Smithfield was 59, a 1.72% increase year-by-year from 2021. Previously, in 2021, Smithfield's population was 58, a decline of 4.92% compared to a population of 61 in 2020.
The median age in Smithfield, NE is 29.9, as per 2021 ACS 5-Year Estimates. Of the total population, 27.27% were under the age of 15, 24.24% aged 15 to 29, 38.38% aged 30 to 64, 3.03% aged 65 to 84, and 7.07% were 85 years of age and older.