In 2022, the population of Nemaha was 114, a 0.00% decrease year-by-year from 2021. Previously, in 2021, Nemaha's population was 114, a decline of 0.00% compared to a population of 114 in 2020.
The median age in Nemaha, NE is 48.5, as per 2021 ACS 5-Year Estimates. Of the total population, 21.65% were under the age of 15, 16.49% aged 15 to 29, 46.39% aged 30 to 64, 15.46% aged 65 to 84, and 0.00% were 85 years of age and older.