In 2022, the population of Zap was 222, a 0.00% decrease year-by-year from 2021. Previously, in 2021, Zap's population was 222, a decline of 0.45% compared to a population of 223 in 2020.
The median age in Zap, ND is 49.5, as per 2021 ACS 5-Year Estimates. Of the total population, 19.47% were under the age of 15, 7.08% aged 15 to 29, 59.29% aged 30 to 64, 14.16% aged 65 to 84, and 0.00% were 85 years of age and older.