In 2022, the population of Sidney was 198, a 0.51% increase year-by-year from 2021. Previously, in 2021, Sidney's population was 197, an increase of 2.07% compared to a population of 193 in 2020.
The median age in Sidney, AR is 33.3, as per 2021 ACS 5-Year Estimates. Of the total population, 25.00% were under the age of 15, 19.15% aged 15 to 29, 41.49% aged 30 to 64, 14.36% aged 65 to 84, and 0.00% were 85 years of age and older.